FAILZERO Bolt Carrier Group AR-15 No Hammer EXO Matte

FAILZERO Bolt Carrier Group AR-15 No Hammer EXO Matte\n\nA completely assembled AR-15 Bolt Carrier Group designed for no-hammer operation with EXO Matte coating. This BCG is a complete bolt carrier group that is ready to install. The kit includes six critical parts treated with EXO Technology, a surface treatment that provides permanent dry lubricity and improves wear life, reducing the need for oil or grease for the life of the weapon.\n\nTreated parts include Bolt, Bolt Carrier, Extractor, Cam Pin, Carrier Key (and associated components). This BCG has fired over 20,000 rounds in a standard anodized upper. Quality features include Case Hardened, Shot Peened and MPI Bolt; EXO Coated Bolt with 40% more wear resistance than chrome and a low coefficient of friction; Mil-Spec gas rings; EXO Coated Carrier; Gas Key with EXO coated exterior; Chrome Lined Gas Key; Hardened to USGI specifications; Grade 8 hardened fasteners; Black extractor insert; Mil-Spec staked gas key; Firing pin and retainer.