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.