Aim Sports Steel Crush Washer for AR-10 .308 Win Rifle, Black, 12/pack - ACWA2

The AR10/LR Crush Washer fits most barrel profiles and allows proper attachment of muzzle device and has 12 Pieces per pack. It ensures proper indexing of a flash hider or muzzle brake.AR-10/308 caliber crush washer insures proper indexing of muzzle brakes and flash hiders.Features:No gunsmithing requiredThread flash hider/muzzle brake and torque 15 to 20 lbEnsures proper indexing of flash hider/muzzle brake