Alpha Premium Nitride v2 Bolt Carrier Group 5.56

$ 106.95 $ 129.99

  • Carrier: Machined from 8620 steel  & QPQ nitride/melonite treated.
  • Improved carrier geometry with M16 profile.
  • The QPQ nitride/melonite treatment hardends the surface to 70 RC and reduces friction, adding corrosion resistance inside and out.
  • Bolt: 9310 & QPQ nitride/melonite treated with additional cryo freeze for extra strength. 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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