Description

Pro Free Float Barrel Nut Shim Kit For: 5.56 / .223 / 7.62×39 / 6.8 SPC / 6.5 Grendel / Blackout AAC 300 (Email to check compatibility if using on a Bull Barrel) kit comes with 1x shim MADE IN THE USA * Maximize ACCURACY by eliminating looseness/slop between barrel and upper receiver. * Maximize RELIABILITY by eliminating any chance of a malfunction due to loose barrel nut. * Maximize SAFETY by eliminating any chance of a catastrophic malfunction due to a loose barrel.