Shim set for Knight's Armament 7.62mm rifles using 3/4"x24 muzzle devices. This 7-Piece Shim Set is for use in properly timing a flash hider or muzzle brake. Shims the muzzle device off of the end of the barrel, does not fit over the barrel threads. Kit includes 7 shims, Rocksett and instructions.
Note: Does not fit the 5/8"-24 muzzle devices