PTAC 5.56 Full Auto Bolt Carrier Group with Charging Handle

Complete 5.56mm Bolt Carrier Group with charging handle -  Made in USA.  Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside and chrome lined inside. Features: Carpenter 158 bolt Chrome Lined Carrier (AUTO) Chrome Lined Gas Key Gas Key Hardened to USGI Specifications Gas Key Grade 8 Hardened Fasteners Gas Key Staked Per Mil-Spec Tool Steel Extractor Extractor Spring Black Extractor Insert