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    300 Blackout Complete Upper. 10" MLOK. 16" Barrel.

    300 Blackout Complete Upper. 10" MLOK. 16" Barrel.

    .300 Blackout Complete Upper, 16" Phosphate Barrel, 10" MLOK Slant rail, perfect upper to go with your AR-15 lower receiver. This .300 Blackout complete upper is perfect for building a badass .300 BLK rifle.  Mil-spec AR-15 USA black powder coated...

    Was: $449.99
    Now: $399.99
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