Yankee Hill Machine Crush Washer 1/2" for 5.56/6.8 SPC/9mm AR-15 - YHM285CW

This is a crush washer designed for AR-15 platforms chambered in 5.56, 6.8 SPC, or 9mm. The 1/2" thread pitch washer is installed between the barrel and muzzle device to ensure proper timing and alignment. It is a standard component used during muzzle device installation on AR-15 rifles.