Constructed of 17-4 PH stainless steel the Taper Mount Muzzle Brake has 2 wear resistant baffle that increases suppressor service life. Additionally the 2 baffle muzzle brake provides maximum braking and reduction in recoil. Each brake comes with a shim set for timing. Taper Mount Thread Protector is compatible with this muzzle device for added protection of thread mounts. - Diameter: 1.075 [taper] .93 [unit] - OAL: 2.3