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

Description

The Yankee Hill Machine crush washer features a 1/2-inch inner diameter and is compatible with 5.56mm, 6.8 SPC, and 9mm AR-15 muzzle devices on standard 1/2×28 threaded barrels. An essential AR-15 part for properly timing and securing flash hiders, muzzle brakes, and compensators.