Alex Pro Firearms M16 Bolt Carrier Group 5.56/300 Blk Nickel Boron
Alex Pro Firearms M16 Bolt Carrier Group 5.56/300 Blk Nickel Boron, The APF Nickel Boron BCG is machined to military specifications. This BCG is full auto compatible.
Features:
Carrier: SAE 8620, Heat Treated, Nickel Boron Plated
Bolt: Carpenter 158, Shot Peened, Heat Treated, Nickel Boron Plated
Firing Pin: Swiss machined, Heat Treated, Precision ground
Gas Key: CNC machined, Heat Treated, Chrome Lined, Torqued and Staked to Carrier, Nickel Boron Plated
Cam Pin: Swiss machined, Heat Treated, Nickel Boron Plated