Faxon AR-15 Bolt Carrier Group Black

5.56mm
9310 Tool Steel Bolt
Full MIL-SPEC Heat Treatment
Shot Peened to MIL-SPEC
Magnetic Particle Inspection (MPI)
Back of Lugs Chamfered for Reliability
Spring, Insert, & Crane O-Ring Installed
Salt Bath Nitrided Bolt & Carrier
S7 Extractor
Superfinished Carrier Body
Full Auto Compatible
Forward Assist Serrations

The Faxon 5.56 M16 Bolt Carrier Group, Nitride is a high-performance and reliable upgrade for your AR-15 rifle. This bolt carrier group is designed for optimal performance and is made from top-quality materials, ensuring durability and longevity. The nitride finish on the carrier and bolt provides added corrosion resistance, making it a great choice for use in harsh environmental conditions.

6mm ARC
Type II (.136") bolt
9310 Tool Steel Bolt
Full MIL-SPEC Heat Treatment
Shot Peened to MIL-SPEC
Magnetic Particle Inspection (MPI)
Back of Lugs Chamfered for Reliability
Spring, Insert, & "Crane" O-Ring Installed
Salt Bath Nitrided Bolt & Carrier
S7 Extractor
Superfinished Carrier Body
Full Auto Compatible
Forward Assist Serrations
Also compatible with 6mm ARC

Seeing MIL-SPEC as just the starting point, they set out to ensure the best options are available for their demanding customers. Improvements include using 9310 tool steel for the bolt, nitriding the assembly to increase surface hardness, decrease resistance, and have superior corrosion resistance compared to typical chrome and phosphasted bolt carrier groups. All bolts are fully MPI tested to ensure the material is sound and without defects. Bolt lugs are chamfered 45 degrees to ensure reliable action for even the highest pressure hand loads and fast lightweight actions.