Griffin Armament Shim Kit 18x1, 3/4"-24

Shims are necessary to provide precise perpendicular alignment of the muzzle device with the thread shoulder of the barrel. We do not recommend the use of anything other than shims for installing muzzle devices for silencer mounting applications. This kit includes stainless shims needed to time any Griffin Armament Muzzle devices. Includes 10 shims.