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F-1 Firearms 5.56 NATO DuraBolt Bolt Carrier Group (BCG)


As low as $219.92 Regular Price $289.95
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The F-1 Firearms DuraBolt direct impingement full auto rated M16/M4 bolt carrier group, for use in AR15 platforms, is compatible with MIL-SPEC receivers and associated components. The bolt carrier and bolt are ground after heat treat to ensure tolerances.


  • TTZ is a proprietary coating from F-1 Firearms
  • Carpenter 158 bolt, ground after heat treat, MPI and HPT
  • 8620 steel carrier, ground after heat treat
  • Weight: 0.72 lbs
More Information
Product Type Bolt
Manufacturer F-1 Firearms
Platform AR-15
Caliber 5.56 NATO

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