The Faxon Superfinished 5.56 Gunner Lightweight Bolt Carrier Group (brand part no. FF556BCGCNITRIDE-LW) is a reduced-mass AR-15 carrier for 5.56 NATO. At 8.5 ounces complete, it cuts reciprocating mass to speed cycling and soften recoil impulse. Faxon Firearms achieved the weight through geometry and an optimized cam path instead of thinner material. Every component is salt bath nitrided and the carrier body is Superfinished. It is built for fast, smooth, competition-ready AR-15 builds.

Key Specifications

• It is chambered for 5.56 NATO AR-15 rifles.
• It weighs 8.5 ounces complete, which reduces reciprocating mass.
• The bolt is 9310 tool steel with full MIL-SPEC heat treatment and shot peening.
• All components are salt bath nitrided, and the carrier body is Superfinished to cut fouling.
• The bolt is magnetic particle inspected, with lugs chamfered at the back for reliable cycling.
• It has an S7 extractor, and the gas key uses Grade 8 fasteners, fully staked.
• The M16-pattern carrier is also .300 Blackout compatible and has forward assist serrations.

Frequently Asked Questions

Does a lightweight carrier need an adjustable gas block? Faxon recommends an adjustable gas block with the Gunner Lightweight BCG, because reduced-mass carriers typically need less gas and an adjustable block lets you tune it.

Can I use it in a .300 Blackout AR-15? Yes. Faxon states that this 5.56 bolt carrier group is also compatible with .300 BLK (300 Blackout) AR-15 builds.

What makes it different from other lightweight BCGs? Faxon focused on geometry, cam path optimization and material selection instead of simply removing mass, so the carrier stays strong at 8.5 ounces complete.

Buy the Faxon Superfinished 5.56 Gunner Lightweight Bolt Carrier Group, Nitride

Order it with other AR bolt carrier groups from our Lubbock, Texas gun shop and it ships fast. It is the standard nitride version of the Gunner lightweight carrier.