Aim Sports .308Win Crush Washer Set

AR-10/.308 caliber crush washer insures proper indexing of muzzle brakes and flash hiders. (12 Pieces Per Pack)

• No gunsmithing required
• Thread flash hider / muzzle brake and torque 15-20lbs. 
• Ensures proper indexing of flash hider / muzzle brake
• 2 cm outer diameter