FAXON SUPERFINISHED 5.56 GUNNER LIGHTWEIGHT BOLT CARRIER GROUP — CHROME

Lightweight precision. Maximum reliability. Effortless performance. The Faxon Superfinished 5.56 Gunner Lightweight Bolt Carrier Group – Chrome (SKU: FF556BCGCNITRIDE-LW-CR) is a premium AR-15 upgrade that blends superior strength, smooth cycling, and corrosion resistance in a lightweight, full-auto-rated package.

Machined from high-strength 9310 tool steel and weighing just 8.5 ounces, this BCG is one of the lightest in its class—without sacrificing durability or performance. The hard chrome finish (68–72 HRC) offers unmatched wear resistance and lubricity, resulting in faster cycling, reduced carbon buildup, and easier cleaning, even after high round counts.

Faxon’s Superfinished carrier body and optimized Gunner profile ensure ultra-smooth operation with reduced friction and fouling. The forward assist serrations, enhanced cam path, and fully MPI-tested bolt provide exceptional reliability, even under the harshest conditions. Every bolt features 45° chamfered lugs for smooth lockup and long-term strength, while the gas key is secured with Grade 8 fasteners and fully staked to maintain seal integrity for life.

Designed to work seamlessly with mil-spec AR-15 rifles and dust covers, the Gunner Lightweight BCG is full-auto rated and compatible with modern triggers and adjustable gas systems. Each assembly proudly bears the Faxon Shield laser engraving — your mark of precision, innovation, and American craftsmanship.

Key Features & Highlights

• Material: 9310 Tool Steel Bolt, 8620 Carrier
• Heat Treatment: Full MIL-SPEC, shot peened, and MPI tested
• Weight: 8.5 oz — one of the lightest full-auto-rated BCGs available
• Coating: Hard Chrome Finish (68–72 HRC) — non-porous, corrosion-resistant, and easy to clean
• Superfinished Carrier Body: Reduces friction and carbon buildup
• Bolt Design: 45° chamfered lugs for smoother lockup and longevity
• Extractor: S7 steel with spring, insert, and “Crane” O-ring installed
• Gas Key: Fully staked and secured with Grade 8 fasteners
• Forward Assist Serrations: Ensures confident operation
• Compatibility: Works with all mil-spec AR-15 rifles and dust covers
• Full Auto Compatible: Retains trip sear for full-auto fire control and advanced trigger groups
• Recommended Pairing: Faxon Adjustable Gas Block for optimal function
• Engraving: Laser-etched Faxon Shield for authenticity
• Origin: Proudly designed and manufactured in the USA

Technical Specifications