The F-1 Firearms DuraBolt Gold 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 DuraBolt Gold is enhanced with a Physical Vapor Deposition (PVD) TiN coating, which gives it an extremely durable and corrosion resistant gold mirror finish. The DuraBolt Gold’s coating also offers excellent lubricity with a 0.45 coefficient of friction.
- Carpenter 158 bolt, ground after heat treat, MPI and HPT
- 8620 steel carrier, ground after heat treat
- Due to current demand, please allow up to 30 days for shipment
