Rubber City Armory Black Nitride+ M16 Bolt Carrier Group w/ Adjustable Gas Key

Rubber City Armory Black Nitride+ M16 Bolt Carrier Group w/ Adjustable Gas KeyFeatures Strong, easy-to-clean, enhanced heat treated Blackntride+ finish inside and out Revolutionary treatment eliminating the need for excessive oil or grease on tactical components Synthetic fluoropolymer of tetrafluoroethylene to each part to reduce friction and improve wear Precision machined bolt Billet Adjustable Gas key is properly staked Made in the U.S.A.Specifications Caliber: 5.56 NATO / .223 Rem. / 300BLK Weight: 11.5 oz. Finish: Blacknitride+ Material: Carrier: 8620 Steel Bolt: 9310 Steel Profile: M16Compatibility: AR-15Includes 1x Steel Bolt Assembly 1x Extractor 1x Cam Pin 1x Low Mass Steel Bolt Carrier 1x Billet Adjustable Carrier Gas Key 1x Firing Pin 1x Firing Pin Retaining Pin