Tactical Rifleman on Doorways, Corners and Crowding Your Cover

This short from Tactical Rifleman isn't about sight picture at all — it's a quick breakdown of why operators avoid crowding a doorway during close quarters battle (CQB), and how that changes once you're actually working the corner.

Key points

• Stay off the door when you can: Tactical Rifleman explains that crowding your cover puts you closer to a potential threat who could grab your weapon or catch you off guard.
• CQB forces the issue: the whole point of close quarters work is learning to move through doorways and obstacles, so getting close to the door is sometimes unavoidable.
• Environments are full of bad angles: the video describes CQB spaces as full of what the instructor calls "FUAs" — bad angles that have to be worked around.
• Teaching progression: Tactical Rifleman says beginners are taught to "glue" the muzzle to the corner first, to learn the dynamics of pieing around it.
• Then disconnect: once those dynamics click, the shooter learns to pull the gun off the corner while still working the angles properly.

Quick take

Despite the title referencing sight alignment, this clip is really a short lesson on doorway discipline and pieing corners in CQB. It's a good reminder that fundamentals like muzzle control and angle awareness are taught in stages, starting rigid and loosening up as the skill develops.

Watch the full video: Tactical Rifleman