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AR-15 BLACK NITRIDE 5.56 HPT/MPI BOLT CARRIER GROUP

AR15 BCG | 5.56 | Black Nitride

80percentlowers.com

  • $159.00


AR-15 BLACK NITRIDE 5.56 HPT/MPI BOLT CARRIER GROUP

Of all the parts in an AR nothing takes more punishment than the bolt carrier group. With chamber pressures of up to 62,000 psi, compromise should never be a consideration when selecting a BCG. This is why 80percentlowers.com has taken the Mil-Spec standard and shelved it for better metals, better standards and no compromise. Enter the 80percentlowers.com AR-15 Black Nitride 5.56 Bolt Carrier Group!

 

Technical Specs

  • Case hardened 8620 Steel Bolt Carrier
  • Case Hardened 9310 High Pressure Tested and Magnetic Particle Inspected Bolt
  • Case hardened 4340 Cam Pin
  • Crane O-ring on 4340 case hardened extractor
  • Machined 4130 Steel Gas Key with staked grade 8 fasteners
  • Centerless ground hard chromed 8740 steel mil-spec firing pin
  • Low friction black nitride finish
  • MADE IN THE USA

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