Barrel Shim Set to be used to correctly orient a timed muzzle device. This set is used with our 5.56mm Q.D. Muzzle Brakes. This shim kit has an inner diameter of 1/2″
Yankee Hill Machine Co Shim Set, Part, 1/2″” Inisde Diameter, Fits .556 Caliber SHIM-3102-SET
