Cmmg Ar15 Crush Washer 1/2

The CMMG AR15 Crush Washer 1/2 is a precision-engineered component essential for proper AR-15 muzzle device installation and function. Designed for shooters and gunsmiths who demand tight tolerances and reliable barrel-to-muzzle-device alignment, this crush washer serves as a critical interface between your barrel threads and muzzle accessories. Whether you're running a suppressor, flash hider, or compensator, correct crush washer installation ensures repeatability, prevents timing issues, and protects your barrel threads from cross-threading damage during installation and removal cycles.

Engineered by CMMG to exacting military standards, the 1/2-inch crush washer functions as a precision shim that absorbs installation stress and maintains consistent rotational alignment. When properly torqued, the washer compresses and deforms plastically, locking the muzzle device in the correct angular position—critical for suppressors that require precise bore concentricity and for muzzle devices whose performance depends on indexed installation. The compact 3 x 0.25 x 4-inch profile weighs just 0.06 lbs, making it a lightweight yet indispensable addition to any AR-15 gunsmith kit or maintenance arsenal. CMMG's manufacturing tolerances ensure the washer seats consistently on 1/2x28 threaded barrels without binding or galling.

Law enforcement armorers, tactical operators, and civilian shooters building or maintaining AR-15 platforms benefit most from keeping spare crush washers on hand—they are single-use components that should not be reused. Compatible with all standard 1/2x28 AR-15 barrels, this washer pairs seamlessly with flash hiders, compensators, and muzzle brakes rated for that thread pitch. During installation, place the washer on the barrel threads, thread your muzzle device hand-tight, then apply controlled torque until the device reaches your target index mark; the washer will compress and lock the assembly in place. For serious shooters who understand that precision starts at the muzzle, the CMMG AR15 Crush Washer 1/2 is a non-negotiable consumable.