Pro Free Float Barrel Nut Shim Kit For:
5.56 / .223 / 7.62x39 / 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.