bolt carrier group

Nickel Boron Bolt Carrier Group


9310 tool steel mil-spec NiB BCG with lifetime warranty

This Nickel Boron Bolt Carrier Group for your AR15, M16, or M4 comes fully assembled. Our bolt carrier group is the best on the market.

  • 5.56/.223
  • Nickel Boron
  • 9310 Steel Bolt
  • MPI Bolt (Magnetic Particle Inspected)
  • Shot Peened Bolt
  • Mil-spec Dry film Lube on Cam Pin
  • Grade 8 Hardened Fasteners
  • Key Staked per Mil-Spec
  • Black Extractor Insert
  • Crane O-Ring
  • Milled Stainless Firing Pin
  • Lifetime Warranty
SKU: nibtrinbcg