SKU: 100044629
UPC: 810046231388
MPN: 55DA5B8
The CMMG Crush Washer 1/2 is a precision-engineered muzzle device component designed for shooters who demand repeatable accuracy and simplified installation on threaded barrel firearms. This crush washer serves as a critical interface between your muzzle device and barrel, ensuring proper timing and alignment without the need for permanent modifications like pinning or welding. Whether you're building a custom rifle, upgrading an existing platform, or maintaining professional-grade equipment, the crush washer method provides a field-serviceable solution that preserves barrel integrity while delivering consistent results.
Engineered with CMMG's exacting standards, the 1/2-inch crush washer works by compressing slightly during installation to take up tolerance stack-up between the barrel shoulder and muzzle device. This mechanical approach eliminates timing issues that can arise from loose-fitting components, allowing the muzzle device to achieve precise angular orientation relative to the barrel bore. The washer is manufactured from hardened steel to withstand the stresses of installation and sustained firing while remaining reusable for component changes. Its lightweight design—just 0.02 lbs—adds negligible weight while providing the structural integrity required for reliable performance across various calibers and recoil profiles.
The CMMG Crush Washer 1/2 is ideal for AR-platform rifles and other modern sporting rifles featuring 1/2x28 threaded muzzles, making it compatible with most standard compensators, flash hiders, and suppressors in that thread pitch. Professional gunsmiths, competitive shooters, and military-experienced builders appreciate crush washers for their simplicity and repeatability—no specialized timing tools required. Installation is straightforward: thread your muzzle device over the crush washer until proper timing is achieved, then remove and reinstall without the washer to lock in that setting. Stock one or several for future builds or replacements, ensuring you always have the precision fit your accurate rifle demands.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
