Brownells M16 Phosphate Bolt Carrier Group MP C158
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Complete M16 Bolt Carrier Group:
- Fully assembled Bolt Carrier Group; including the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin
- Every Bolt is Magnetic Particle Inspected (MPI)
- The Bolt is machined from Carpenter 158 steel
- Following machining, the Bolt is heat treated and shot peened
- Installed extractor includes red o-ring with spring
- M16 Bolt Carrier is machined from 8620 steel and hardened
- Interior of Bolt Carrier Carrier Key & Bolt Carrier are chrome lined on the M16 Phosphate Bolt Carrier Group only
- M16 Bolt Carrier will function in semi-auto or full-auto AR-15/M16
- Gas Key Screws are properly torqued and staked
- Bolt and Bolt Carrier feature a matte black mil-spec finish
SPECS:
Bolt – Carpenter 158 steel, Magnetic Particle Inspected. Carrier – 8620
hardened steel, M16. Matte black phosphate finish.