• Free Float Quad Rail Barrel Nut Shim Kit 223/556/300BLK

    $9.99
    Free Shipping!

    • 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.


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