Odin Works ACC308BCG AR-10 Bolt Carrier Group Black Nitride .308

The Odin Works ACC308BCG delivers enhanced reliability and extended service life for AR-10 platforms chambered in .308 Winchester and 7.62x51 NATO. This bolt carrier group addresses common extraction and ejection issues found in standard AR-10 BCGs through precision manufacturing and advanced surface treatments. Built to handle the increased pressures and stresses of full-power rifle cartridges, it maintains consistent cycling across various ammunition weights and powder charges.

What Makes This Different

The ACC308BCG features Odin Works' proprietary bolt geometry with optimized cam pin placement and enhanced extractor spring tension. Unlike mil-spec AR-10 bolt carriers that often struggle with reliability across different ammunition types, this BCG incorporates dimensional improvements based on extensive testing data. The black nitride coating penetrates the steel surface rather than simply coating it, providing superior wear resistance compared to standard phosphate finishes.

Key Features

• Black nitride surface treatment for enhanced corrosion resistance and reduced friction
• Precision-machined from 8620 steel with proper heat treatment specifications
• Enhanced extractor with improved spring tension for reliable extraction
• Optimized gas key staking and sealing for consistent gas pressure
• Compatible with DPMS-pattern AR-10 receivers and .308/7.62x51 chambers
• MPI tested bolt for structural integrity and crack detection
• Includes complete bolt, carrier, cam pin, and firing pin assembly

Field testing demonstrates consistent extraction and ejection with both military surplus and commercial ammunition ranging from 147-grain to 175-grain projectiles. The enhanced extractor maintains positive case extraction even with steel-cased ammunition that typically challenges standard extractors. Weather resistance testing shows the nitride coating maintains function in temperatures from -20°F to 140°F without lubrication failure.

Technical Specs

• Material: 8620 steel bolt and carrier construction
• Finish: Black nitride treatment (65+ HRC surface hardness)
• Compatibility: DPMS-pattern AR-10 receivers
• Chambering: .308 Winchester, 7.62x51 NATO
• Gas key: Properly staked with Grade 8 screws
• Bolt face: M118 chamber specifications
• Country of origin: USA

This BCG represents a significant upgrade over standard AR-10 bolt carriers for shooters requiring maximum reliability. The combination of improved metallurgy, enhanced extractor design, and superior surface treatment addresses the most common failure points in large-frame AR platforms.