YHM BARREL SHIM SET AR15 1/2 INNER DIMENSION

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 – Included with this shim kit are shims with the following thicknesses: – 2x 0.002 – 5x 0.005 – 1x 0.020