Odin Works ACC65BCG 6.5 Grendel Bolt Carrier Group Type 2 Nitride

The Odin Works ACC65BCG delivers enhanced reliability and extended service life for 6.5 Grendel builds through precision manufacturing and advanced coatings. This Type 2 bolt carrier group addresses common extraction and ejection issues found in standard BCGs when running the 6.5 Grendel cartridge.

What Makes This Different

The ACC65BCG features geometry specifically optimized for the 6.5 Grendel cartridge dimensions, unlike standard 5.56 BCGs that can cause feeding problems. The black nitride coating penetrates the steel surface to create a wear-resistant finish that maintains lubricity longer than standard phosphate coatings. Odin Works machines this BCG to tighter tolerances than mil-spec requirements, reducing bolt face wear and improving extraction reliability.

Key Features

• 6.5 Grendel-specific bolt geometry for reliable extraction and ejection
• Black nitride coating provides superior corrosion resistance and lubricity
• 8620 steel bolt carrier with proper mass for consistent cycling
• Carpenter 158 steel bolt with shot-peened surface treatment
• Chrome-lined gas key with Grade 8 fasteners and staking
• Compatible with standard AR-15 upper receivers and barrels
• Includes bolt, carrier, gas key, cam pin, and firing pin assembly

Field testing shows consistent cycling with both supersonic and subsonic 6.5 Grendel loads across temperature ranges from -20°F to 140°F. The optimized extractor spring tension and ejector design eliminate double-feeds common with adapted 5.56 BCGs. This BCG maintains accuracy potential by providing consistent lockup and reducing bolt face deformation over extended firing schedules.

Technical Specs

• Caliber: 6.5 Grendel (Type 2)
• Bolt Material: Carpenter 158 steel, shot-peened
• Carrier Material: 8620 steel
• Coating: Black nitride treatment
• Gas Key: Chrome-lined with Grade 8 screws
• Weight: Approximately 11.5 oz
• Compatibility: Standard AR-15 platform
• Manufacturer: Odin Works, USA

This BCG eliminates the reliability concerns associated with using standard 5.56 components in 6.5 Grendel builds. The precision manufacturing and cartridge-specific design ensure consistent performance whether running match ammunition or hunting loads.