Barrel Nut Shim Kit - Free Float Spacers for Precision Adjustment (20 Pack)

Compatible with standard barrel nut, fit. 223, 5.56, 6.8 and 300 BLK. Will NOT work with. 308 Win and 6.5 Creedmoor barrels or barrel nut. For use in the installtion of barrels, including. 223, 5.56, 6.8 and 300 BLK.

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