FAILZERO Bolt Carrier Group AR-15 No Hammer EXO Matte

A completely assembled, ready to install AR-15 Bolt and Carrier System. Kit includes six critical parts that are treated with EXO Technology, a revolutionary surface technology that provides permanent dry lubricity, radically improves the performance of your AR-15 and eliminates the need to apply oil or grease to treated parts for the life of the weapon. Treated parts include; Bolt, Bolt Carrier, Extractor, Cam Pin, Carrier Key. This BCG has fired over 20K rounds in a standard anodized upper. Quality features include: Case Hardened, Shot Peened and MPI Bolt (Magnetic Particle Inspected) EXO Coated Bolt (40% more wear resistant than Chrome with a very Low Coefficient of Friction) Mil-Spec Gas Rings EXO Coated Carrier Gas Key with EXO Coated exterior, Chrome Lined ID Gas Key Hardened to USGI Specifications Grade 8 Hardened Fasteners Black Extractor Insert Mil-Spec Staked Gas Key Firing Pin and retainer