Griffin Armament Taper Mount EZ-Brake - 9mm. (Revolution and Resistance series compatibility with appropriate adapters) Constructed of 17-4 PH stainless steel the Taper Mount EZ Brake features 6 radial slots which provides effective recoil mitigation. The Taper Mount EZ brake weighs 2.0 ounces making it one of the lightest mounts available for the Taper Mount Interface. The lighter weight reduces suppressor system weight while making the host firearm barrel lighter and more responsive to the shooter. The EZ Brake does not require timing and will interface with a 13/16in standard socket wrench for installation. Taper Mount Thread Protector is compatible with this muzzle device for added protection of thread mounts. Features of Griffin Armament Taper Mount EZ-Brake Radial slots provide recoil mitigation with no timing required Taper ensures solid lock up and minimal/repeatable POI shift 17-4 PH Stainless steel Lustrous Black Nitride Finish Package Contents: Griffin Armament Taper Mount EZ-Brake Griffin Armament TMEZ9C1228: Taper Mount EZ Barrel Muzzle Brake 9mm 1/2x28 Black