Titan Rose Gold DLC 5.56 Polished Bolt Carrier Group (BCG)
Coated bolt carrier group (full auto version) for AR15, M16, or M4 machined from Mil-Spec 9310 aircraft quality steel with shrouded firing pin. The special titanium nitride coating offers an ultra-hard and low friction surface that provides smooth operation and makes cleaning a breeze. The coating increases hardness, resistance to oxidation, thermal stability and durability.
· M16 Bolt Carrier: 8620 Steel, Heat Treated, Machined from Billet, Final Ground Before Titanium Nitride Coating [TiN PVD ROSE GOLD]
· Bolt: 9310 Steel, Heat Treated, Shot Peened, MPI, Black Nitride Finished
· Gas Key: 4140 Steel, Properly Staked, Grade 8 Fasteners, Titanium Nitride Coating [TiN PVD ROSE GOLD]
· Firing Pin: 8640 Steel
· Cam Pin: 4140 Hardened Steel, Heat Treated, Black Nitride Finished
· Extractor: 4140 Billet Steel, Manganese Phosphate Finished for Positive Grip, Extractor Insert Included, Viton O-Ring Included