Rubber City Armory Black Nitride+ 458 SOCOM/450 Bushmaster Bolt Carrier Group

Rubber City Armory Black Nitride+ 458 SOCOM/450 Bushmaster Bolt Carrier GroupKnown for manufacturing some of the best BCGs that you will find in some of the BIG NAME manufacturers' OEM guns. Rubber City Armory M16 Bolt Carrier Group features H&M's Blacknitride+ treatment.The carrier is made from 8620 steel, bolt 9310 steel, billet staked gas key, and tool steel extractor/cam pin. It is compatible with all AR-15 platform systems.