Nickel Boron 5.56 Bolt Carrier Groups


SKU: JLB-556-Nib


Premium quality Nickel Boron 5.56 Bolt Carrier Groups. These are the best you’ll find on the market and fully polished prior to Nickel Boron coating.

  • MPI Bolt (Magnetic Particle Inspected)
  • Carpenter 158 Steel Bolt (Nickel Boron Coated)
  • Shot Peened Bolt
  • Grade 8 Hardened Fasteners
  • 8620 Heat Treated Carrier, Polished w/Nickel Boron Coating
  • Key Staked per Mil-Spec
  • Additional information

    Weight 1.0 lbs


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