Alpha Premium NiB V2 5.56 Bolt Carrier Group

$ 117.61 $ 159.95

  • Improved carrier geometry with M16 profile.
  • NiB (Nickel Boron) plating reduces friction, adding corrosion resistance inside and out as well as wear resistance.
  • Bolt machined from 9310 steel and MPI tested and marked.
  • Carrier machined from 8620 steel.
  • Shot peened precision ground diameters.
  • Magnetic particle inspected and laser marked.
  • Extractor machined from S7 tool steel
  • Crane extractor O ring to boost extraction clamping force.
  • Gas key: Machined from billet 4140 with grade fasteners and staked to mil spec.
  • Chrome plated firing pin per mil spec.

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