SIG MCX-Regulator Attempts to Redefine the Ranch Rifle

by Vern Evans

SIG officially released its newest rife recently, one aimed squarely at the ranch rifle concept as an all-purpose, do-it-all carbine. The SIG MCX-Regulator comes chambered in 5.56 or 7.62×39, built off the same MCX SPEAR-LT upper receiver and gas piston system employed by military forces.

SIG MCX-Regulator Details

“The heart and soul of this rifle is one of our flagship products – the legendary MCX,” said Tom Taylor, Chief Marketing Officer and Executive Vice President, Commercial Sales, SIG SAUER, Inc.  “This is the first time the DNA of an Elite Special Forces battle platform, flawless function, and a short stroke gas piston system has been specifically designed and visioned for the working rifle.  At SIG we don’t subscribe to the premise that its acceptable to compromise for any purpose, including your working rifle, and this rifle will revolutionize a day at the ranch or however you use your REGULATOR.”  

The MCX-Regulator features an aluminum frame and Magpul SGA Mossberg 500/590 traditional stock. It all comes finished with a Gen II NiR FDE Cerakote. The platform includes a redesigned lower receiver compatible with all MCX upper receivers. It utilizes a fully-ambidextrous magazines release, safety selector, and bolt catch.

The rifle comes with a two-stage match trigger and cold hammer-forged carbon steel barrel. A SIG muzzle brake, available in both 7.62×39 and 5.56, and Acra Rail add appeal. A 10-round magazine comes standard.

SIG also offers an option of the rifle with a factory-installed Mil-Spec ROMEO2 optic. The red dot features a molded glass aspheric lens with high-performance coatings. It employs D.A.R.C. (Dark Adaptive Reticles and Coatings) technology for reticle brightness and target clarity using day or night vision. MOTAC (motion-activated illumination system) automatically turns the optic off when not in use and back on again with motion detected. It all rides in a 7075 aluminum housing with a full shroud.

For more info, visit sigsauer.com.

SIG MCX-Regulator Specs

  • Caliber: 5.56
  • Overall Length: 39.1 in.
  • Height: 5 in.
  • Overall Width: 2.4 in.
  • Barrel Length: 16 in.
  • Barrel Twist: 1:7 in.
  • Weight w/magazine: 7.9 lbs.
  • Caliber: 7.62 x 39
  • Overall Length: 38.9 in.
  • Height: 5 in.
  • Overall Width: 2.4 in.
  • Barrel Length: 16 in.
  • Barrel Twist: 1:9.5 in.
  • Weight w/magazine: 7.9 lbs.

MCX-Regulator with ROMEO2

  • Caliber: 5.56
  • Overall Length: 39.1 in.
  • Height: 5.5 in.
  • Overall Width: 2.4 in
  • Barrel Length: 16 in.
  • Barrel Twist: 1:7 in.
  • Weight w/magazine: 8 lbs.

ROMEO2 Red Dot

  • Magnification: 1x
  • Reticle: Circle Dot 3MOA
  • Adjustment: 1 MOA (per click)
  • Clear Aperture: 30mm
  • Illumination Settings: 12 Daylight, 3 NV
  • Waterproof: IPX7
  • Battery: CR2032
  • Overall Length: 1.84 inches
  • Overall Width: 1.32 inches
  • Height w/o shrouds: 1.12 inch

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