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A revolution is well underway, but it doesn’t have anything to do with immigration, tariffs, or AI. Instead, it’s a quantum leap in the thermal imagery technology, deployed in that backwater of hunting that takes place at night.
As companies both miniaturize the size and increase the capabilities of their thermal sensors, image-correcting software, and high-resolution displays, the amount of digital technology packed into a modern thermal scope is the equivalent of that of an early NASA spaceship.
Even entry-level thermal scopes have impressive tech packed in their flimsy housings.
But pay close attention to the top-end products in this review. They’re expensive because they are built around the most sophisticated components available to the consumer market. But one of the dominant trends in thermals is that this leading-edge tech quickly descends into other, more affordable, product lines and into competitors’ catalogs.
While our testing rewards these higher-performing thermals — after all, there’s a demonstrated benefit to higher-resolution thermal cores, larger germanium lenses, and proprietary image-sharpening algorithms — our testing also demonstrates that there’s a decent thermal scope for every budget.
The entry-level models might leave you with a headache and a desire for a sharper image, but they’ll at least get you in the nighttime hunting game.
Here are the top thermal scopes of the year. Note that it’s an invitational test; we didn’t invite every product and brand, but we endeavored to test a variety of models, brands, and prices to give readers an idea of what’s on the market, and the attributes they should consider as they buy a thermal scope.
Jump to How We Tested Thermal Scopes
Best Thermal Scopes of 2025
Editor’s Choice, Best Overall: AGM Adder V2-60
Photo by Scott Einsmann
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Pros
- Shot-activated video recording
- Integrated ballistic calculator
- Best display resolution in class
- Internal/external battery dual-power system
- 9-plus hour run time
- Top-turret operation is fast and simple
- Rounded display resembles traditional daylight scope
- Red and green monochrome palettes reduce night-blindness
- Ships with 30mm ADM Recon Mount
- Extremely easy to zero
- 5-year warranty
Cons
- At over $7,000, wildly expensive
- Unexpected shut-downs with battery drain
The future of thermal hunting is here, and it’s gonna cost you. The new 1280-class Adder V2-60 from AGM Global is bright, clear, sensitive, and fully capable of making range-adjusted nighttime shots out to 1,000 yards. The price for that performance? An eye-watering $7,300.
Anyone who has ever used a thermal scope has wanted it to perform like a daylight scope. But the technology that converts temperature variation into visible images is so full of noise and distortion, from the processor to the software that sharpens images to the digital screen that projects them to your eye, that thermal hunters have to accept headaches, eye strain, and astigmatism as a price for seeing into the night.
The V2-60 is the closest I’ve come to a thermal scope that delivers an image that’s in the same galaxy as that of a traditional scope. It achieves that performance with a souped-up 1280×1024 sensor, one of the most powerful in the class, and a high-resolution 2560×2560 digital display that is crisp and contrasty. But it’s AGM’s software that fuses these components into an almost pleasing image.
Add a blazing-fast 1,000-meter through-the-lens laser rangefinder, cold-and-warm viewing modes that reduce eye strain, an on-board ballistic calculator that displays distance-adjusted holdover, and a 9-hour run time, all packed in a fairly trim 30mm aluminum tube.
All that performance combines to make the AGM Adder V2-60 the consensus winner of our Editor’s Choice as the top thermal scope of the year.
But there’s more. Two features of the Adder that may get lost in its specs include a ½-power magnification step. Most thermals have what’s called “step zoom,” in which the magnification doubles with every tap of the button. Those big steps can create large gaps in the zoom range, but the Adder’s incremental zoom creates a much more usable magnification range. Second, that 1-inch hyper-sharp display is slightly rounded, giving users the visual perception of looking through a traditional scope.
The AGM wasn’t without its flaws. Tester Alex Robinson struggled with unexpected shut-downs.
“When the external battery was low, but the internal battery was full, the scope shut off repeatedly,” he noted.
The AGM had hot competition from Nocpix’s new 1280-class ACE S60R scope and Pulsar’s Thermion 2 XL50. On paper, the Nocpix has the more impressive array of features. But here’s where the power of image-enhancing software tips the scales. In head-to-head-to-head comparisons, testers unanimously noted that the Adder had the clearest and least eye-straining image. That’s a squishy but important consideration for thermal users who might be behind their scopes for hours at a time.
Still, there’s the issue of the high cost of the AGM. Readers who aren’t immersed in the realities of thermals might be put off by the price. But readers who know that, just as with traditional optics, with thermals, generally, the more you pay, the more you get. That’s certainly the case with the remarkable, full-featured, investment-quality AGM Adder V2-60.
Thermal Sensor | 1280×1024 |
Display | 2560×2560 |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
Frame Rate | 25Hz |
Magnification | 2.5-28x |
Objective Lens | 60mm germanium |
Rangefinder | 1,000-meter detection range, through the lens laser |
Image Storage | 32GB on-board |
Price | $7,345 |
Great Buy Thermal Scope: Athlon Cronus ATS Pro 25P-250
Photo by Scott Einsmann
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Pros
- For around $700, a bargain
- 9-hour run time with internal and external batteries
- Includes single-point QD rail mount
- Single-button and rotary selector operation
- At 8 inches, perfect for carbines
- Easy to zero and calibrate
Cons
- Power/selector button is finicky
- Battery cap hard to keep closed
- Underwhelming clarity
- Clunky mobile app
Let’s start with what this entry-level thermal isn’t. It isn’t very clear or very sharp. It isn’t going to allow you to shoot out to 500 yards, or even past 250 yards. It isn’t going to win any hunting competitions or design awards. It feels a little flimsy.
But it is one of the best bargains in the thermal market, and is fully capable of getting you on coyotes and pigs out to near 200 yards. It will easily capture video and photos and transmit them to your phone. It comes with a solid rail mount. It’s easy to operate. And it gives hunters an opportunity to dip their toe in the thermal category without taking out a second mortgage.
Given the astonishing capabilities – and prices – of its competition, we had low expectations of the Athlon. The ATS Pro’s 256-microbolometer sensor is among the lowest-resolution cores in our test. To put that in context, the 1280-microbolometer sensor of AGM’s Adder has five times more resolution. It’s also 12 times more expensive.
The $600 entry point for the Athlon Cronus ATS Pro 25P-250, combined with its decent performance, is what makes it so appealing, and what earned it our Great Buy award for the highest Price/Value score in the group.
If you want a bit more resolution, consider Athlon’s Cronus ATS Pro 35P-400, with a 400×300-pixel core. That unit will cost you about $1,000; in our view the increased performance doesn’t quite justify the upcharge.
The 25P-250 Cronus isn’t racing for the bottom. Its one-button and rotary selector operating system is fast and intuitive. Double-tap the power button to reveal the menu, use a rotary collar inside the eyepiece to navigate its options, then hit the power button to make selections. The scope has 10 selectable reticles, five based on MOA and five based on MIL dimensions adjustments, and seven color palettes. While the Athlon doesn’t exactly have a ballistic calculator, it does have the ability to customize reticles to various holdover values at specific distances.
Athlon’s mobile app is a little clunky — among its other shortcomings, it only works in horizontal mode — but the photo and video transfer is easy.
The single-point rail mount is decent, and makes for fast mounting, but it’s not a precision attachment. We also had fits keeping the battery cap attached. That’s a small quibble, but a meaningful shortcoming since it reduces operating time. And we worried that the plasticky build might not be up to the sort of bump-and-grind abuse thermal hunters routinely demonstrate.
But those are speculative fears. What we determined in testing is that this is a thermal that’s absolutely worth the money.
Thermal Sensor | 256×192 |
Display | 1024×768 OLED |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
Magnification | 3.6-14.4x |
Power | 1 internal battery, 2 rechargeable 18500 batteries |
Reticles | 10 reticles, 7 color palettes, pre-set holdover values |
Price | $599 |
Nocpix ACE S60R
Photo by Scott Einsmann
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Pros
- 1-3x ocular magnifier
- Rounded display increases clarity and detail
- Simple single-button/single/dial operation
- N-Link system connects to other Nocpix devices
- 1,300-yard through-lens laser rangefinder
- 32GB on-board image storage
- Ability to “hot-swap” batteries without shutting down device
- Ballistic calculator displays range-adjusted reticle hold
- Standard 30mm tube
- 5-year warranty
Cons
- Very expensive
- Inconsistent connection to mobile app
- Glitchy rangefinder performance on inclined targets

Every tester (and every tester’s thermal-using buddy) was more excited to put their hands on this new flagship scope from Nocpix than any other thermal. It’s gotten tons of hype not only for its exceptional performance but for its astonishing price of just under $8,000.
While it would be easy to dismiss that price as a stratospheric extravagance, there’s a lot in this scope that justifies it. Let’s start with the stunning resolution. It ran head-to-head with the AGM Global’s flagship and just ahead of Pulsar’s remarkable Thermion2. Its 1280-class thermal core generates a rich and detailed image, but it’s the high-resolution 2560-pixel display that makes looking through this scope almost like an AI-rendered video, so sharp and vibrant are the images it delivers.
Like the AGM Adder, the Nocpix ACE uses a slightly rounded display that imitates the circular field of view of a daylight scope, a design that somehow reduces eye strain. It was also one of the few scopes that was useful in daylight. Adding to the conventional feel is the Nocpix’ 30mm tube, which accepts standard scope rings, and a very smart magnification ring on the ocular lens. This manual magnification enables users to add between 1-3-power in addition to the digital magnification without causing any reticle shift. It’s a very handy feature when you want to add just a bit more magnification to a scene without doubling the digital zoom.
We also liked the easy operation of the ACE S60. A button in the eyepiece powers on the unit, starts and stops recordings, and fires the laser rangefinder. For other menu items, simply tap the button on top of the elevation turret, then turn the turret to navigate selections. And, man, are there a lot of selections.
Among its more noteworthy attributes: an onboard ballistic calculator that adjusts the reticle to your specific load’s impact at distances determined by the rangefinder. Once you have your dope loaded, simply range a target, and you’ll get a range-adjusted holdover. The through-the-lens laser rangefinder is fast and fairly accurate, though some testers noticed incorrect ranging at severe angles.
The ACE S60R also utilizes Nocpix’s new N-Link, a Bluetooth-enabled frequency that communicates with other Nocpix devices. A user scanning with the Nocpix Quest thermal binocular, for instance, could range a target and transmit that information wirelessly to the ACE scope, where it would show up as the range-adjusted reticle hold. It’s a slick system that elevates the capabilities of a hunting team and is especially handy in the fast-paced coyote competitions that tester David Stroud competes in.
Stroud, who uses a variety of high-end scopes in the Texas predator-hunting circuit, was especially emphatic about the talents of the new 1280-class ACE.
“I have the ACE H50R and have used it for the past few months, but the S60R is on another level, entirely,” Stroud noted. “I will probably invest in the ACE S60R as my next thermal.”
We had only a few quibbles with the Nocpix, but they were enough to knock it out of the top spot by a single point. The most common problem was inconsistent connection to the mobile app, and then getting the app to refresh with our ballistic data.
But the Nocpix is the scope that other thermal weapon sights will be judged by. It’s not only the flagship for Nocpix, but for the entire industry. An investment in the ACE S60R is soothed a bit by its durable build and its remarkable 5-year warranty. Even more remarkable: warranty claims are addressed at the brand’s Dallas-area service center within five days, so users won’t be without this remarkable scope for long.
Thermal Sensor | 1280×1024 |
Display | 2560×2560 AMOLED |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
Frame Rate | 50Hz |
Magnification | 2x base magnification, 24x zoom |
Power | Dual-battery operation |
Reticles | 10 reticles, 7 color palettes, pre-set holdover values |
Price | $7,999 |
Pulsar Thermion 2 LRF XL50
Photo by Scott Einsmann
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Pros
- Durable aluminum alloy build
- 30mm tube accepts standard rings
- 2-battery (1 internal, 1 external) operation
- Ambidextrous focus control
- Simple 3-button operation
- Integrated ballistic calculator
- Simple zeroing procedure
- Rich image contrast
- Connectivity to excellent Stream Vision 2 app
Cons
- Proprietary batteries
- Bulky rangefinder module
- Glitchy app connectivity

The third in our trio of full-size flagship scopes, to include the Adder from AGM and the ACE from Nocpix, Pulsar’s Thermion 2 is the OG of the category. It set the design and performance standards that its competitors have adopted, and in some cases, exceeded.
The latest version of the venerable Thermion2 is a 1024-class gem. It features an excellent laser rangefinder, very good optics and image-enhancing software, and one of the easiest, most intuitive menu navigation in the class. With a 1.75x base magnification and a top-end mag of 14x, it has the close-in capabilities for hog hunters who generally engage targets inside 200 yards, but it has the resolution and magnification to take coyotes out to 500 yards and beyond.
Appealing attributes of the Pulsar include the smartest focus control in the category, textured dials on either side of the bulky rangefinding unit that focus the image. Most scopes have an objective-bell focus that’s a long arm reach for users, but the side focus works for both right- and left-handed shooters and enables fine focus without pulling the rifle off your target. We also liked the 3-button navigation system with buttons on the eyepiece.
Pulsar’s picture-in-picture feature, in which users can magnify the portion of the image that’s covered by the reticle while leaving the rest of the image at base magnification, is also noteworthy. The P-in-P resolution is sharp, the aiming point highly visible, and allows users to have both situational awareness with the wide field of view and pin-point precision with the magnified aiming point.
“This is the scope I hunted with the most and I had no issues detecting or identifying coyotes out to 200 yards. But, I also hunted with Nocpix Ace which, is much more sophisticated for an extra $1,000,” says Outdoor Life‘s gear editor, Scott Einsmann.
We didn’t like Pulsar’s proprietary batteries, though. While most thermal brands have migrated to interchangeable lithium-ion batteries, particularly large-capacity 18650 cells, in addition to their internal rechargeable batteries, Pulsar’s APS batteries fit only in the brand’s chargers and battery compartments. They work well enough, but lose one at your peril, and learn to carry the Pulsar charger with you in the field.
Unlike other brands, which list only the sensitivity of their thermal core — this is the NETD, the value of which is listed as mK, or millikelvin, in each thermal’s specs — Pulsar adds a sNETD, which stands for system sensitivity. It’s an important distinction, because it describes the image delivered to the user’s eye, not just the image rendered by the sensor. I mention this because the image of the 1024-microbolometer Pulsar is every bit as sharp and contrasty as that of the 1280-class AGM and Nocpix. Some testers thought the Pulsar was even better.
That’s a testament to a brand that has built thermal scopes for decades and which still dominates the category. The XL50 is built like a tank and will reveal targets as far away as you want to shoot.
Thermal Sensor | 1024×768 |
Display | 1024×768 |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
System Sensitivity | |
Storage | 64 GB internal |
Frame Rate | 50Hz |
Magnification | 1.75x base magnification |
Rangefinder | 800-meter |
Power | Dual-battery operation |
Price | $6,999 |
Most Versatile: Nocpix SLIM H35
Photo by Scott Einsmann
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Pros
- Dual viewer/sight functionality
- Quick-release Pic-rail mount
- >1 MOA point-of-aim shift through magnetic alignment
- Ambidextrous one-hand operation
- Powered by common 18650 rechargeable batteries
- Intuitive 3-button navigation
- Durable magnesium alloy chassis
- Perfect configuration for AR carbines
Cons
- No rangefinder
- Middling resolution
- QD mount isn’t particularly precise
You have to use this handy, versatile, and priced-right thermal to fully appreciate its abundant talents. It’s a hand-held monocular, configured for decent mid-range scanning. But it can snap onto a mount in seconds, with the aid of a magnet for indexing, and the SLIM becomes a capable rifle sight. We tested this function for return to zero and it was right on after removing it and putting it back on.

This dual-use unit is the answer to those hunters who recognize that, in order to be in the hog- and predator-hunting game, you need both a thermal viewer and a thermal scope. But who has the budget to afford both? This single unit might not be the ideal of either platform, but it’s good enough at both that budget-minded hunters should seriously consider it. In fact, it was a close second to the Athlon Cronus ATS Pro 25P-250 for our Great Buy award.
Tester Alex Robinson crystallized its place in the category.
“This seems like a great option for a new night hunter or a pig hunter who will be shooting at 100 yards and in. I like the easy functionality, small profile, and the ability to remove it from a rifle and use it as a handheld viewer.”
As in any Outdoor Life gear test, testers identified some shortcomings. First, its 640-class sensor is pretty good for hog hunting inside 250 yards, but it’s not sharp enough for the long-range shooting that characterizes most nighttime coyote hunting. Second, the quick-release Pic rail mounting interface is fast, for sure, and it’s pretty precise, but it’s not a system that will warm the hearts of long-range precision shooters. Nocpix claims a 1 MOA deviation in return to zero between the transition from viewer to scope, and that’s about right. That +/- is right in line with the expectations of most hog hunters.
This is not a ding on the unit, but rather on the Nocpix digital ecosystem — every tester tore his hair out with infuriatingly frequent firmware updates. Another demerit: no rangefinder.
I tested the value proposition of the viewer-to-scope capability, and timed the transition. I used the SLIM H35 as a hand-held viewer, identified a steel coyote-sized target at 200 yards, slapped the Nocpix on my 22 Creedmoor, cinched it down, reacquired the target, and then made a first-shot hit all within 13 seconds. I recorded no point-of-impact shift.
We liked the fact that the SLIM uses standard flat-top 18650 batteries, has a smart magnetic charging port for quick power-ups, and has recoil-activated filming.
In short, this isn’t a full-featured scope or viewer. But it’s not intended to be. Instead, it’s intended to be a one-and-done do-it-all thermal that can capably transition from a viewer to a rifle sight.
Thermal Sensor | 640×512 |
Display | 1024×768 |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
Storage | 32 GB internal |
Frame Rate | 60Hz |
Magnification | 2x base magnification |
Length | 8.5 inches |
Weight | 18.7 ounces |
Price | $3,299 |
Best Mid-Priced Thermal Scope: Guide TU651 LRF
Photo by Scott Einsmann
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Pros
- Traditional riflescope design
- Easy menu navigation with top turret
- Single-button LRF operation
- Left-side zoom control is fast and easy
- Impressive on-board memory
Cons
- Objective-bell focus is overly tight
- Too-frequent refreshes
- Too-tight objective lens focus
- Target IR mobile app is clunky
This otherwise very good thermal scope raises a critical question for potential buyers: Do you spend $4,000 for a 640-class scope that is serviceable, or do you spend twice that amount for a thermal that will blow your hair back?
It’s the same question that shoppers of traditional daylight optics ask. Reduced to its essence the question is: Do you settle, or do you invest?
Those who settle will get pretty good mid-range performance from the Guide TU651. The ergonomics are generally excellent, and they include a fast and intuitive top-turret menu navigation, a left-turret zoom control, and a single-button laser rangefinder operation on the back of the ponderously large ranging unit. The durability is equally satisfying; a stout 30mm aluminum tube that mounts on standard scope rings.
Our complaint with the TU651 is its guts. The 640-pixel core is good, but compared to the new class of 1280-microbolometer sensors that is coming to the market, its resolution and image quality is anemic. If you’re spending a bit over $4,000, you don’t want just “good.” Happily, the Guide brings enough other talents to the game that its resolution won’t be distracting.
The intuitive operation is its superpower. Its interface is fast and simple, and the laser rangefinder is both powerful and fast, though the nearly 2-inch-tall LRF module ruins the sleek lines of the Guide. Capturing images is as simple as pressing a button on the eyepiece, and zooming the magnification with the control where you might expect to find an illumination or parallax focus on a traditional scope, on the left turret, is an excellent feature.
Operationally, each tester complained about frequent freeze-ups as the digital image refreshed, and a couple said the Target IR mobile app was hard to navigate. Still, there’s a lot of performance in this big, honest thermal scope. And if you don’t like the price of the performance delivered by the 50mm TU 651, Guide has nearly a dozen other models with a combination of objective lens size and thermal resolution to fit your budget and your performance expectations.
Thermal Sensor | 640×512 |
Display | 1440×1080 AMOLED touch-screen |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
Storage | 128 GB internal |
Frame Rate | 50Hz |
Power | Internal and external batteries, 12-hour run time |
Magnification | 2.4-19.2 |
Rangefinder | 1,500-meter |
Detection Range | 2,800-yard |
Ring Size | 30 mm |
Price | $4,059 |
Best Carbine Thermal Sight: SIG Sauer ECHO SV35
Photo by Scott Einsmann
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Pros
- Cantilevered Pic rail
- Ships with premium hard case
- Connects to SIG’s BDX 2.0 system
- Connects to Applied Ballistics dope
- Runs on twin rechargeable 18650 batteries
- 11-hour run time
- Covered by Sig’s lifetime guarantee
Cons
- Mount is hard to use with bolt guns
- Useful range limited to 250 yards
- Stingy eyebox
Sig Sauer’s long-awaited entry into the thermal market isn’t a single product. It’s three versions of the ECHO line, all built around the same 640×512 thermal core. The company has a 25mm clip-on, a 50mm weapon sight, and this 35mm sight. The 50mm version costs another $500, which isn’t that much given its additional reach and optical horsepower.
The 35mm version is a solid freshman effort, and it seamlessly folds many of the products from the Sig ecosystem into a workaday thermal. There’s the Ballistic Data Exchange (BDX) that wirelessly shares aiming dope between devices. There’s Sig’s KenETHIC energy indicator that allows a hunter to set a foot-pounds threshold for distance-adjusted shots. There’s Sig’s proprietary optical coatings and what Sig calls its Lightwave DSP, which is a fancy term for a signal processor that’s supposed to provide fast refresh rates.
The ECHO is also built like a Sig, which is to say it’s a brick, in all the best ways. Its aluminum-alloy chassis is built for the abuse night hunters dish out to devices, and its power source, twin rechargeable 18650 Li-Ion batteries, keep it firing for an impressive 9 to 11 hours. Also on the plus side is its 1,000-yard integrated laser rangefinder.
The 7-inch integrated cantilevered Picatinny rail is a great attribute, and it makes the ECHO a boon companion for full-rail AR carbines. But, it makes mounting the scope to a bolt rifle a relative nightmare. We couldn’t run the ECHO on our Horizon 22 Creedmoors because the rangefinder module collided with the bolt lift.
While we’re on demerits, the Sig was optically underwhelming. It was handy inside what the test team calls “pig range,” the inside 200-yard operating range of most feral hog hunters. But it struggled to define even deer-sized targets beyond 300 yards, which makes the 1,000-yard laser rangefinder a little extraneous. Testers dinged what they called the “stingy” eyebox and the eye-watering display during long hunting sessions.
“I needed Visine after about an hour behind the Sig,” noted tester Derrick Ratliff.
We like the 4-button menu navigation. It’s a smart and intuitive system, with brightness, image capture, menu-access, and laser rangefinder buttons all around the central control button. With so much of the industry migrating to 3-button or even 1-button operation, the 4-button arrangement takes some practice but in the field it’s fast and sure.
In all, it’s a decent sight. We might recommend this 35mm version lose the rangefinder and become a slim and nimble sight, while the 50mm version could transition to the mid- to long-range thermal. But if you’re an AR hunter looking for a plug-and-play thermal sight, the ECHO is a great choice, and the fully transferable lifetime warranty makes it one of the safest investments in the thermal category.
Thermal Sensor | 640×512 |
Display | 1024×768 |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
Storage | 32GB internal |
Magnification | 1.5x base magnification |
Rangefinder | 1,000-yard |
Price | $3,999 |
Best for Hog Hunting: AGM Rattler V3 50-640
Photo by Scott Einsmann
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Pros
- Integrated rail mount
- In-lens laser rangefinder
- Shot-activated video recording
- Slim and compact form factor
- Impressive detection range
- Integrated ballistic calculator
- 5-year warranty
Cons
- Proprietary batteries
- Disappointing resolution
- Puny display
We’re not quite sure how AGM Global has so many models at so many different resolutions, but our take-away is that if you don’t like the image or the price of one AGM model, shop around, because the brand probably has a thermal for every performance and price point.
The V3 version of AGM’s venerable Rattler builds on the celebrated line, adding an in-lens laser rangefinder, a high-resolution 1920-class display, and an unbelievable 3-mile detection range.
All those attributes are great on paper (or on a website) but in our experience, the new Rattler is an excellent inside-250-yard hog sight but a disappointing 400-yard coyote sight. Those might seem like arbitrary metrics, but in the field they’re meaningful. We could identify, classify, and target game inside that wild-hog boundary of about 200 yards. But we struggled to do the same with those cagy coyotes, which generally won’t come inside the 400-yard ring unless conditions are just right. That maximum operating range gave testers the consensus conclusion that the Rattler V3 is a nearly perfect hog-hunting scope, but it struggles at coyote distances.
We loved the compact form factor that makes this a capable mount-and-shoot AR carbine scope and its overall functionality, which includes its shot-activated recording, onboard ballistics calculator, and connection to the excellent AGM app. But we tested the 50mm Rattler against the 35mm Sig ECHO, and it was hard to find meaningful differences, despite the bigger AGM lens and somewhat better image-enhancing software.
Still, the AGM has some very appealing close- to mid-range attributes, which includes a 4-button menu navigation, quick refresh, smooth focus, and what AGM calls its “image boost” software that sharpens and adds contrast to its picture.
If the V3 version of the Rattler is too rich for some hunters, consider more price-point Rattlers. It’s a proven and capable platform and if AGM has demonstrated anything, it’s that it can deliver a product for any combination of budget and thermal expectation.
Thermal Sensor | 640×512 |
Display | 1920×1080 |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
Refresh Rate | 50 Hz |
Storage | 64 GB internal |
Magnification | 3.5x base magnification |
Rangefinder | 1,000-yard |
Price | $4,495 |
Most Durable: Armasight Commander 640
Photo by Scott Einsmann
Buy From Midway USA
Pros
- Ships with Kinetic Sidelox rail mount
- Tough metallic-alloy housing
- 3-year warranty
- Double-tough gaskets and build
- Choice of simple and practical reticles
Cons
- No mobile app or wireless media transfer
- Limited 4-hour run time
- Range limited to about 200 yards
Like Trijicon’s thermals, Armasight is courting the consumer market after a robust track record of providing thermals to military and law-enforcement agencies. That martial DNA is on full display with the Commander, which is built around a shock- and drop-proof metal-alloy chassis and battery and SD-card compartments that are gasketed, tethered, and otherwise immune from user abuse.
The 640-class sight is designed for use with an AR carbine. Like the Sig ECHO, it has an integrated cantilever mount that’s optimized for full-length rails. The compact form factor is similarly sized for use with an AR-15-sized carbine, though we had a ball with it on a .22 rimfire. Also like Sig, the Commander shares design and operation with other Armasight thermals; once you learn to navigate this unit, you can seamlessly transition to any of its 640-class models.
The Commander is a decent close- to mid-range sight, but also like the 640-class Sig, we struggled to define targets beyond about 250 yards. The Armasight also lost points on its relatively limited run time of 4 hours, as it’s powered by twin CR123 batteries. And the brand doesn’t have a mobile app or ability to wirelessly connect. Instead, media is stored on a micro SD card and must be manually transferred to a device.
Those aren’t deal-breakers, but they hold the Armasight back from consumer expectations. What the Commander640 brings, though, is simple and reliable operation. I mentioned its session aboard a rimfire; this might be the most capable varmint-removal tool in our arsenal. Night hunting for rats, raccoons, and skunks suits its compact form-factor, its short-range talents, and its fast operation.
Thermal Sensor | 640×480 |
Display | 1024×768 |
Pixel Pitch | 12-micrometer |
Sensor Sensitivity | |
Magnification | 1.5x base magnification |
Price | $3,999 |
Best Reflex Sight: Holosun DRS-TH
Photo by Scott Einsmann
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Pros
- Excellent red dot
- 10 hours thermal run time
- 50,000 hours red-dot run time
- Integrated rail mount
Cons
- At 18 ounces, bulky
- No wireless media transfer
- No mobile app
Holosun has married its excellent red-dot technology with a miniaturized thermal unit in the DRS-TH, which enables users to capably deploy handguns or self-defense shotguns in nighttime scenarios. Our testing was geared to tease out the talents of mid- and long-range thermal scopes, so we weren’t able to get a full work-up on the Holosun.
But we strapped the unit on our 22 Creedmoor ARs and had a ball with short-range plinking in quick target-acquisition scenarios. We operated the DRS-TH in separate red-dot and thermal modes, but the unit can run in dual-use mode where users can dim down the red dot to a barely visible aiming point and use the thermal for low-light target detection and recognition. It’s a fast and effective combination.
The unit has a 2 MOA red dot with eight brightness settings as well as four night-vision settings. Users can choose between a 65 MOA circle or 32 MOA depending on how large you like your donut of death. Or deactivate the circle and use just the red dot for precision work. DRS-TH has a 1x base mag but magnification steps to 3x and 5x. Display options include white hot, black hot, outline, and highlight modes.
The small size of the Holosun does have some drawbacks. It doesn’t have a Bluetooth transmitter, so it doesn’t connect to a mobile app. Users can record video and then transfer it via USB cable. And the small controls and separate lens covers take some practice to quickly deploy the sight in the field.
But the display, at 1.25x.98 inches, is surprisingly large for such a micro sight, giving users a fairly wide view of the world. Given those dimensions, plus all the technology packed into this sight, the unit is a chunk. But it’s just about perfect for an AR, pistol-caliber carbine, or home-defense shotgun.
Thermal Sensor | 256×182 |
Display | 1024×768 |
Magnification | 1x base magnification |
Reticle | 2 MOA red dot and 32/65 MOA circle |
Price | $1,882 |
More Top Thermal Scopes
InfiRay BOLT TX60C
Photo by Scott Einsmann
See It
Pros
- Supported by excellent InfiRay Outdoor app
- Excellent 30mm quick-detach scope mount included
- Objective lens focus lever
- 7 color palettes (white hot, black hot, red hot, color, violet, crimson, Veridian)
- Picture-in-picture mode
- Intuitive three-button controls
Cons
- At around $7,000, a hefty investment
- Battery access caps are easy to cross-thread
- Image pixelates at higher magnification
Score Card
-
Ease of Set-Up: Excellent -
Connectivity: Very Good -
Thermal Performance: Excellent -
Shootability: Excellent -
Field-Worthiness: Excellent -
Price/Value: Fair
Key Feautres
-
High-definition 1024×1024- microbolometer thermal sensor -
3-16x magnification -
2560×2560 round AMOLED display -
60mm objective lens -
Recoil-activated video -
Compatible with external laser rangefinding module -
Accepts standard 18650 batteries -
7 reticle choices
The most consistent and enduring dig on thermal optics is that the image they deliver is grainy, dull, and unfocused. Even in the best conditions, these devices can’t match the sharpness of traditional optics. The resolution of thermals’ sensors and displays are far less than that of your mobile phone or laptop computer screens.
The reason, of course, is that the image that reaches your eye behind a thermal is a digital depiction of reality, and the factor that limits sharpness is a combination of pixels and processors that turn tiny differences in detected temperature into images our brains can comprehend.

A video showing the Bolt TX60C’s color palettes and resolution while viewing a buck on the ride about 150 yards away.
It’s expensive to boost digital resolution. That’s why thermals with high-resolution sensors cost much more than those with lower-resolution sensors. Many thermal brands “cheat” by providing software solutions that sharpen and brighten images. But the new InfiRay Outdoor BOLT TX60C thermal scope features a premium 1024×1024 sensor that’s double the resolution of most of its competitors. Even more remarkable, its display resolution is 2560×2560 and round to provide corner-to-corner clarity. That investment in image processing results in a noticeably sharper and more resolved image compared to the InfiRay’s peers.
The optical horsepower of the BOLT puts it in a class by itself, but it has tons of other features that make it a fast, smart, intuitive, and highly effective hunting and shooting rig. Taken in total, the InfiRay BOLT TX60C handily wins our Editor’s Choice award as the top thermal scope of the year.
You’ll pay for this level of performance. Priced at $6,999, the BOLT is an expensive product, but it not only represents the next generation of thermals, but considering all its talents, it’s not out of line with the price of lower-performing competitors.
Operationally, the BOLT is simple and intuitive. In place of a traditional scope’s elevation turret, the BOLT has a push-and-turn control that operates its extensive electronic menu. Near the eyepiece is a 3-button control that activates the photo/video mode, palette choice, and image brightness. The controls are easy to use with gloved hands, and riffing between modes and menu choices is among the simplest of any unit in our test.
Externally, the BOLT has an objective lens focus with a retractable throw lever that makes fine-tuning focus easy and fast in the field. The unit has a recoil-activated video mode that automatically records 30-second clips before and after a shot. And the InfiRay has one of the simplest battery systems in the field. Users can plug the scope into a wall mount with a USB cable, or they can use standard 18650 batteries, swapping them in and out in the field. Add an inclinometer, choice of seven reticles, seven color palettes, and a compass-activated directional orientation, and this thermal scope wins on attributes alone.
Add a best-in-class quick-detach Picatinny rail mount, and you have an investment-grade thermal that should provide years of excellent operation and imagery, with software upgrades provided by the excellent InfiRay Outdoor app.
InfiRay RICO Hybrid 75 640
Photo by Andrew McKean
See It
Pros
- Supported by excellent InfiRay Outdoor app
- Ships with robust quick-detach cantilever rail mount
- Ambidextrous objective lens focus Intuitive button functionality
- 10 electronic reticles
- Picture-in-picture mode
Cons
- At around $8,000, a hefty investment
- Significant battery drain in cold weather
- Sluggish performance when rangefinder and image capture operate concurrently
Score Card
-
Ease of Set-Up: Very Good -
Connectivity: Very Good -
Thermal Performance: Excellent -
Shootability: Very Good -
Field-Worthiness: Good -
Price/Value: Good
Key Features
-
Sensor Resolution: 640×512 -
75 mm objective -
Detection Range: 3600 Yards -
Sensor Frame Rate: 50hz -
Optical Magnification: 4X -
8x digital magnification -
Onboard laser rangefinder -
6 hour run time
We greeted InfiRay’s claim that the RICO Hybrid scope could detect deer-sized objects out to 3,600 yards with a big dose of skepticism. After all, that’s a lot of real estate for any optic, especially in the veiling darkness of night. But at this year’s Outdoor Life optics test, we used the Hybrid to scan the miles-distant face of the soaring Rocky Mountain Front, and damned if we didn’t detect an animal — it might have been a cow moose or a young bull elk — feeding out of a cottonwood bottom and grazing on a foothill pasture, at 1 in the morning.

A moose spotted 2 miles away with the Hybrid.
The next day, we ranged the spot. It was two miles away, 3,311 yards, to be exact. InfiRay’s claims are spot-on. This is a serious, expensive, and very capable thermal scope, and if you have $8,000 laying around, you should run to a retailer or internet site to buy this. It’s that good.
It’s actually a little too good. We’ve been used to rating the relative merits of thermals based on their sensor and display resolution. Those with higher-resolution innards generally deliver better imagery, and since this is a test of optics, image is everything. Well, almost everything.
This is one of the few cases in thermal devices where lowish sensor resolution doesn’t necessarily result in disappointing performance. The RICO Hybrid scope has a fairly pedestrian sensor resolution of 640×512 microbolometers, which should produce a forgettable image. But InfiRay has combined a huge 75mm objective lens (a 50mm lens is also available) with a high-resolution 2560×1920-pixel display, and a sophisticated digital processor to boost the image, creating sharp, immersive, three-dimensional images out of quavering nocturnal targets.
The Hybrid has a number of other appealing features for thermal hunters. It ships with a built-in Picatinny mount that easily mates to most rifle rails, and it has a couple of other integrated Pic rails that accept accessories, including a sold-separately InfiRay laser rangefinder module. Its controls are simple and easy to use at night. Those include a dial focus control that’s easy to use with gloved hands, and a smaller dial that controls the internal menu.
The device captures both photos and videos, and sharing them through the InfiRay Outdoors app is easy and simple. Users can also choose to manually download images stored on the 64 GB onboard memory of the RICO. The unit has a recoil-activated video capture mode that allows users to capture 30 seconds before and after the trigger is pulled. Run time on the rechargeable batteries is about 6 hours, depending on how much recording you do, and given the great image capture of this device, you’re going to do a lot of videoing.
There are some important downsides to this hefty thermal scope. The first is its physical size. It weighs 2.8 pounds, so you’d better have a good bipod or tripod to handle the weight of the optic and your rifle. And it’s undeniably expensive, especially when you consider that a laser rangefinder will cost another $800 to add a Bluetooth-connected rangefinder to this unit.
But for a thermal scope that will fully reveal the far-away world at night, and will help shooters place bullets thanks to customizable reticles, this scope is in a class of its own. When you consider that it also performs as a very competent hand-held thermal viewer, the sticker shock is a little less, well, shocking.
Read Next: Best Thermal Monoculars
Pulsar Krypton FXG50
Photo by Andrew McKean
See It
Pros
- Supported by excellent Stream Vision 2 app
- Mounts on standard daylight scope
- Doubles as thermal monocular
- 11-hour battery run time
- Rugged magnesium alloy housing
- Mounts to either rail or slave scope
Cons
- At around $4,500, a hefty investment
- As a scope, must be used with secondary optic
Score Card
-
Ease of Set-Up: Very Good -
Connectivity: Excellent -
Thermal Performance: Very Good -
Shootability: Very Good -
Field-Worthiness: Good -
Price/Value: Good
Key Features
-
640×480-microbolometer thermal sensor -
3x magnification -
1920×1080-pixel display resolution -
2300-yard detection range -
16-gigabyte onboard memory -
Lightweight – 18 ounces -
Kit includes adapters for wide variety of slave scopes
For some reason, American hunters haven’t fully embraced the elegance, simplicity, and versatility of clip-on thermals. Our European peers pioneered the use of clip-ons, which use traditional daylight scopes as slave optics, with the thermal unit literally “clipping-on” to the objective bell of the scope. The design dominates in Europe, largely because hunters don’t have to swap out their main rifle scope in order to add thermal capability.
That’s probably because gun ownership is limited in Europe, and most hunters there don’t have a dedicated night-hunting rifle.
But it really is a sensible way to add thermals to your existing arsenal. Clip-ons tend to be less expensive than dedicated thermal scopes, and they often have better electronics and recording capabilities because they’re not dedicating so much room and battery power to generating images.
If you’re looking for the best of the clip-on world, Pulsar’s Krypton2 is a good place to start. It features an excellent 640×480 12-micron sensor, a high-resolution 1920×1989 AMOLED display, 2,500-yard detection range, and a whopping 11-hour battery life, thanks to a backpack battery that clips right to the top of the unit. Adding to its value and versatility, the Krypton2 doubles as a thermal imaging device when paired with Pulsar’s monocular.
One of the arguments for clip-ons is their relatively clear image. Because they use the magnification of the slave scope to enlarge the digital image, they’re largely free of the extreme pixelization that occurs when most thermals zoom in. The Krypton2 has a fixed 3-power magnification, obviously more than the 1X of most clip-ons, which gives it a bit more reach while still delivering a clean, crisp image.
Pulsar ships the Krypton2 with a whole series of adapters to fit a wide variety of rifle scopes. It connects to the very good Stream Vision 2 app that allows users to remotely control the device, stream video from the clip-on, and easily record and share photos and videos. Significantly, it also allows users to upload photos and video to a Stream Vision cloud storage.
Operationally, we had no quibbles with the short, light, durable unit. It has all the functionalities you’d expect – eight color palettes, intuitive arrangement of buttons that are easy to reach from the front of the scope, and 16 GB onboard image storage. But the Pulsar also has the ability to calibrate the unit’s display so it centers in your rifle scope’s exit pupil, a key feature to align the thermal with the daylight optic.
We do have a quibble with Pulsar’s naming convention, though. Would-be buyers should be aware of the significant differences between the Krypton2 FXG50, which we tested, and the FXQ35, which has a lower-resolution sensor and decreased operating range.
iRay RICO MICRO V2
Photo by Scott Einsmann
See It
Pros
- Incredibly versatile
- Good image quality inside 100 yards
Cons
- As a clip on the focus is tricky at extended ranges
Key Features
-
Can be used as a clip-on, scope, monocular, or helmet-mountedthermal -
MSRP $4,999.00 (Also available in a 384 sensor for $3000) -
Objective Focal Length:
25mm -
Detection Range:
1375 Yards -
Optical Magnification:
1X -
Digital Magnification:
4X -
Objective Diameter:
25mm -
Manual Focus -
Eye Relief:
45mm -
Display Resolution:
1440×1080 -
7 Reticle Options -
Color Palettes:
White Hot, Black Hot, Red Hot, Color -
Onboard recording -
WiFi connection -
Storage Capacity:
64GB -
Power Source:
USB-C or 18650 Battery -
Run Time:
6.5 hours -
5 Year Warranty -
Made in China -
Length:
4.52 -
Weight:
11.3 ounces -
Operating Temperature Range -4°F to 122°F -
IP67 -
Recoil Rating:
300 Win. Mag -
Sensor Resolution:
640×480 -
Sensor Pixel Size:
12μm -
Sensor Frame Rate:
60hz -
Display Resolution:
1440×1080
Thermal optics are expensive, and there’s no way to avoid paying for performance. But you can choose how much your thermal does. For example, you can spend $4,000 on a thermal scope, but it will only be useful as a weapon sight. On the other hand, you can spend $4,000 on a Rico Micro, and you’ll have a scope, clip-on, hand-held monocular, and a helmet-mounted monocular all in one unit. That’s a pretty compelling feature set, especially if you want one thermal optic that can do it all.
I tested the Rico Micro on a South Texas hog hunt where I spent most of my time high rack hunting. That meant fast shooting at moving pigs from 30 to 200 yards. I mounted the Rico Micro in front of a Vortex Razor 1-10 set on 1x and pre-adjusted my focus for 50 yards. After an hour riding around, and blasting a few skunks, we spotted a group of bigs a touch over 100 yards away. They were moving left to right, trying to get up and over a hill. I threw the scope to my eye and had a nice wide field of view. Then, I caught the pigs at the edge of the scope and panned left to get on one. I squeezed off two quick shots and heard a loud squeal.
One of the key challenges to the place I was hunting was the large number of exotics and other animals we weren’t allowed to shoot. This made target identification a big deal and I needed to quickly focus the thermal on a running animal, identify it, and then make a shot at it. The Rico Micro’s strength isn’t quick focusing or high-detail at long distances, so it left me wanting a dedicated thermal scope in that scenario. But let’s say I were hunting a feeder, the Rico Micro would be an amazing option for turning a day optic into a night optic. I did find the focus easier to manage when the Rico Micro was used as handheld, especially inside 50 yards.
After hunting with the Rico Micro, I think it’s an excellent option for someone who wants a quality monocular that can also be used as a clip-on or scope for close-range (inside 100 yards) hunting.
ATN ThOR5 LRF
Photo by Andrew McKean
See It
Pros
- Mounts on standard 30mm rings
- Excellent built-in rangefinder
- Traditional scope mounting geometry
- Cant indicator
- Robust 3-year warranty
- At about $3,200, a fair value
Cons
- Onboard photo/video storage
- Frustrating menu navigation
- Unreliable app connectivity
Score Card
-
Ease of Set-Up: Good -
Connectivity: Poor -
Thermal Performance: Very Good -
Shootability: Very Good -
Field-Worthiness: Fair -
Price/Value: Very Good
Key Features
-
640×480-microbolometer thermal sensor -
1024×768-pixel display resolution -
4-32x magnification -
9-hour battery life -
Built-in laser rangefinder with 1,000-yard range -
Integrated ballistic calculator -
8-pattern reticle plus ability to create reticles
You’re going to need to set aside a chunk of time to unlock all the features of this remarkable thermal scope. That’s because there are so many functions and sub-functions, but also because the user interface is frustratingly Byzantine.
The payoff for navigating the convoluted menu is unlocking the abundant capabilities one of the most versatile thermal scopes on the market. The ThOR (not a typo, that’s how ATN names its flagship thermal) has one of the most precise and useful integrated laser rangefinder in the field. But it also has features like manual pixel healer to improve the displayed image, an integrated ballistics calculator, a cant indicator, compass header, wind indicator, and through an available app, the ability to create and share reticles with other users.
ATN is one of the OGs of the thermal market, and early generations were defined by glitchy operation. That’s still an issue with this fifth-generation ThOR, but it’s much more stable than previous iterations. The 4-32×50 model that we tested costs $3,295, pretty good for its boost in sensor resolution. Our model has a 640×480 processor; pay attention since ATN also sells a ThOR 5 with a 320×240 sensor that doesn’t have nearly the resolution or the reach of the more powerful thermal.
You’ll need your own set of 30mm rings to mount the ATN. While many brands are shipping quick-detach rail mounts with their sights, the ability to use your own rings gives users more mounting options. Field tests confirmed the laser rangefinder’s reach to 1,000 yards, and combined with the ballistics function, we made shots out past 500 yards with a variety of calibers.
The ThOR 5 has some significant shortcomings. First, it stores video and photo content on an onboard micro SD card. If you want to share images, you have to manually download the data. While ATN has a fairly robust mobile app — and after working our way through the tedious WiFi connection — we found that it doesn’t yet have the ThOR 5 profile available for linkage. We expect that to change in the coming months.
Users must also manually input important components of ballistics, including altitude, temperature, humidity, and barometric pressure. More advanced thermals fetch that environmental data from onboard sensors.
Our final gripe is with the 7-button navigation. It takes some time to learn the functions of each button, and in a controlled environment we got pretty good with riffing through menu options and selecting various functions. But in the field, while wearing gloves and in the hectic moment of incoming coyotes, the buttons are too small and closely configured to operate effectively. At one point, while trying to laze a coyote, switch color palettes, and increase magnification simultaneously, we were pushing and releasing buttons like frenzied trumpet players.
But if the interface is frustrating, the capabilitiesof this scope are impressive. The ability to mount it to a rifle, zero it in just a couple shots, then engage targets out to the very limits of its recognition range make it a relatively affordable thermal sight worth a hard look.
How We Tested the Best Thermal Scopes
We tested this year’s class of thermals in the places and style that most American hunters use them: in Texas hunting coyotes, bobcats, and wild hogs.
We based our test out of a sprawling ranch in South Texas’s brush country, where we had thousands of acres of coyote and bobcat hunting out the back door. We also had access to a shooting range with steel targets out to a mile and reaction targets from MR Targets.
We strapped all thermal weapon sights onto either Horizon Firearms bolt guns or ARs chambered in 22 Creedmoor and zeroed the thermals at the range in both daylight and after dark. We used the thermal viewers to assess hits, just as a range spotter might do with daylight optics. And we used the stationary targets as the basis for assessing thermal image, sensitivity, focus, and operating range.
But the bulk of our testing was in the field. Test team member, competitive coyote hunter, and captain of “Team Dead On,” David Stroud, provided his high-rack rig with three swiveling shooting tables. While Stroud drove and called, the rest of the team rotated through sessions on the high rack and with various thermal sights and viewers. In quiet moments between calling sessions, we cycled through thermals’ menus, practiced navigating their buttons and features in the dark, and assessed image quality, various features like rangefinders and color palettes, and recorded videos and photos through the devices.
And we killed coyotes and bobcats, enough to confirm the talents of many of the submissions in real-world conditions. Our plan was to take the collection of thermals to a neighboring ranch for a night of pig hunting, but while we were in South Texas, a monsoonal rainstorm broke the region’s drought, and we were washed out of pig hunting. But Stroud later took many of the thermals to a hog lease, where he finished evaluations and content collection.
In daylight, we further evaluated the units, rating them on ease of use, connectivity to a mobile app, versatility for a wide range of uses, thermal features, image resolution and overall image quality, and durability. And we assessed their value, asking of each submission: how much performance do you get for the money. This particular category, considering thermals can cost several thousand dollars, is among testers’ (and buyers’) most important considerations.
The unit with the highest overall score wins our Editor’s Choice as the best submission in the category. The thermal with the highest Price/Value score wins our Great Buy award.
The Outdoor Life Thermal Test Team
This year’s Outdoor Life thermal test team includes a pair of Texans who handle more thermals in a month than most of us do in a year and three Outdoor Life editors who evaluate gear with a combination of objectivity and close attention to detail and value to readers.
Texan David Stroud actively participates in the growing competitive coyote circuit, hunting all night across Texas at least a couple weekends a month and using a wide variety of thermal viewers and weapon-mounted sights in his pursuit of fur and prize money.
Derrick Ratliff is the founder and president of Horizon Firearms in Bryan, Texas. Ratliff was an early adopter and manufacturer of the 22 Creedmoor, a round that’s become a darling of night hunters for its flat trajectory, mild recoil, and hard-hitting performance on predators and hogs. We ran Horizon’s bolt guns chambered in 22 Creed, fueled by Hornady’s 80-grain ELD-X ammunition.
Alex Robinson is Outdoor Life’s editor in chief and frequent member of OL’s gun and optics tests. He’s an avid deer, turkey, and waterfowl hunter and is relatively new to hunting with thermals.
Scott Einsmann is Outdoor Life’s gear editor, and oversees all of OL’s flagship gear tests. As the youngest member of the test, he’s also a digital native, an important consideration for navigating thermal devices.
Andrew McKean is Outdoor Life’s optics editor and designed our test methodology as well as handling most of the testing logistics.
Things to Consider Before Buying a Thermal Scope

The author coyote hunting while testing thermal scopes.
The first thing you should consider if you’re in the market for one of the best thermal scopes is how you’ll use it. Do you want a rifle-mounted scope, with reticle and even a built-in laser rangefinder? If that’s the case, then you’re looking at a fairly expensive subset of thermals. Or maybe you just want a unit to see into the night. A hand-held thermal will do just fine, at a fraction of the cost of the thermal scopes, but without any ability to place after-hour shots.
Second, consider your budget. You can spend anywhere from about $1,000 to well over $10,000 on these devices. But if you’re simply interested in a viewer to detect animals or maybe a car parked at a trailhead, you won’t need all the bells and whistles of a scope. But if you want a plug-and-play scope to shoot coyotes or varmints after legal shooting light, then you should expect to pay well over $3,000 for the most capable rifle-mounted sights.
FAQs
Thermal units range in price from around $1,000 for basic thermal viewers to over $7,000 for the most sophisticated rangefinding scopes. Keep in mind that these aren’t night-vision units, which can cost only a few hundred dollars. Thermal scopes depend on a rare-earth element called germanium, which supplies temperature-sensitive glass for thermal units. Generally speaking, the best combination of attributes, capability, and overall utility of thermal units will set you back around $3,000.
That’s a great question. You’ll generally see a couple of different resolution equations mentioned for thermal devices. One measures the sensitivity of the sensor, or the interface that receives the thermal image. The bigger the numbers, the more detail the sensor is receiving. That’s generally a function of quality components and size of the objective lens. For higher-quality units, look for sensor resolution of about 640×480 pixels. You also want to pay attention to the display sensitivity. That’s a measurement of how much detail you’ll see on the screen of the device. The higher the number, the more contrast and detail you’ll observe. Resolution of 1064×748 provides very good visibility.
There are a number of quality brands on the market, but generally European brands only have thermal sights or what are called clip-on units, intended to be used with a standard riflescope. Units from Russia and Southeastern Europe generally have a good combination of rangefinding riflescopes and hand-helds, though quality is variable. Then there are American brands such as Trijicon and Burris that have consumer versions of their military-grade thermals.
Generally, thermal scopes and viewers are illegal to use in pursuit of game animals, like deer or turkeys. But most states allow their use for non-game animals, like coyotes or raccoons. You’ll have to check with your state’s hunting regulations to see if they’re expressly prohibited. Because they occupy a gray area, it’s a good idea to also check with your local game warden.
Final Thoughts on the Best Thermal Scopes
The best thermal scopes and clip ons are getting more affordable and accessible by the day. Until you are able to see through the darkness and pick up thermal signatures several hundred yards out in the field, you might not think you need one of these devices. But once they reveal all the hidden secrets of the night, you’ll want one just to see what happens around you in the dark.
But not all thermals are created equally. Generally speaking, you get what you pay for, with the cheaper units lacking some crucial attributes, but the most expensive having more modes and capabilities than most people normally need.
Read the full article here