AR-15 5.56/.223 NIB M16 BOLT CARRIER GROUP / NICKEL BORON FUSION

AR-15 5.56/.223 NIB M16 BOLT CARRIER GROUP / NICKEL BORON FUSION

AR-15 5.56/.223 NIB M16 BOLT CARRIER GROUP / NICKEL BORON FUSION

Comes completely assembled, properly staked gas key, and ready to drop in your upper.

Features:

• 8620 Steel Bolt Carrier, Nickel Boron
• 9310 Bolt MPI (Magnetic Particle Inspected), Nitride
• Hydraulically Staked CL Key
• Grade 8 Screws to Mil-spec
• USA Made
• Heat Treated for Heavy Duty use
• Hard Nickel P+ Finish Bolt Carrier
• Serrated