1pc Black Crush Washers

Quality USA Manufactured crush washers for your muzzle device installation in select sizes. Sold as single unit. Instructions for certified gunsmith:1. Place crush washer with the narrow end of the cone facing the rifle against the shoulder of the barrel.2. Thread on muzzle device by hand.3. Using appropriate tool on the muzzle device flats and torque the muzzle device to 20 -35 lbs or until the top of the device is facing in the appropriate direction.4. Boresight to ensure proper alignment.DO NOT OVERTIGHTEN. THIS MAY RESULT IN MISALIGNMENT. Do not use a crush washer a second time. Discard and replace with new crush washer everytime the muzzle device is removed. Recommended Torque 20-35lbs