Gen 3 Relief Cuts to Accommodate a Wide Range of Aftermarket BCG'sForged 7075-T6 Aluminum Hardcoat Anodizing: MIL-A-8625F, Type III, Class 2Mil-spec Diameter PA15 6-Position Receiver ExtensionPalmetto State Armory Classic A2 Grip, BlackPalmetto State Armory Classic M4 Stock, BlackTwice Staked M4 Lock NutPA10 Short Buffer & PA10 Buffer SpringCaliber: .308
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