Faxon Superfinished 5.56 Gunner Lightweight Bolt Carrier Group – Nitride

The Faxon Superfinished 5.56 Gunner Lightweight Bolt Carrier Group (Nitride) was engineered to close a performance gap in the lightweight BCG market—delivering reduced mass without compromising strength, durability, or reliability. Designed to live up to the Gunner name, this BCG is purpose-built for fast, smooth, competition-ready AR-15 platforms.

At just 8.5 ounces complete, this lightweight carrier reduces reciprocating mass to improve cycling speed, reduce recoil impulse, and enable faster follow-up shots. Faxon achieves this through careful geometry and an optimized cam path—rather than sacrificing critical material strength.

All components are salt bath nitrided to increase surface hardness, reduce friction, and provide excellent corrosion resistance. The carrier body receives Faxon’s proprietary Superfinish to further reduce fouling and enhance smoothness of operation.

Faxon recommends the use of an adjustable gas block when running the Gunner Lightweight BCG to properly tune gas flow and ensure optimal function.