Faxon FF556BCG M16 5.56 Bolt Carrier Group TiN PVD

The Faxon Firearms M16 5.56 Bolt Carrier Group is a full-auto rated replacement assembly built for AR-15 and M16-style platforms. It combines a 9310 tool steel bolt with factory MPI testing and surface treatments intended to increase hardness and corrosion resistance. The assembly includes a TiN PVD coated carrier and nitriding of the assembly along with staked Grade 8 fasteners on the gas key to promote consistent operation. The design emphasizes durability, smooth cycling, and long service life in a variety of field conditions.

Key Specifications

• The cartridge is .223 Rem / 5.56 NATO.
• The bolt is made from 9310 tool steel.
• The finish is TiN PVD coated.
• The assembly is nitrided for increased surface hardness.
• The unit is rated full-auto.
• Bolt lugs are chamfered at 45 degrees to aid engagement.
• All bolts are MPI tested to verify material integrity.
• The gas key uses Grade 8 fasteners and is fully staked.
• Size is specified as Mid-Length.
• The carrier color/finish is listed as Gold.

Engineered above mil-spec baseline, this Faxon BCG is focused on reliability and longevity for demanding shooters. Its combination of tested materials, surface treatments, and robust hardware makes it suitable for builders and maintainers who prioritize smooth operation and durable service life in M16-style and AR-15 platforms.