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
