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San Tan Tactical AR-10 Enhanced BCG – .308 / 6.5 Creedmoor Black Nitride
Features
- Enhanced bolt carrier group for compatible .308 Win and 6.5 Creedmoor large-frame AR platforms
- Flared rear carrier design helps reduce carrier tilt by optimizing the carrier’s bearing surfaces
- Increased carrier mass supports proper dwell time and extraction, including suppressed and short-barreled configurations
- Three enlarged forward ports help vent excess gas from the carrier
- Case-hardened 8620 steel carrier with a black nitride finish for wear resistance and reduced friction
- 9310 case-hardened steel bolt with shot-peened, black-nitride-treated components
- Bolt surfaces are CNC ground after heat treatment for precise fit and consistent dimensions
- Precision-ground area behind the gas rings helps reduce carbon buildup and simplify cleaning
- Hardened 4340 cam pin with fully chamfered cam pin channel
- AISI 8740 steel firing pin is centerless ground and hard chrome coated
- MPI and HPT tested
- Upgraded extractor spring with Crane-spec O-ring
- Made in the USA
The San Tan Tactical Enhanced .308 Bolt Carrier Group is built around a flared, increased-mass carrier designed to improve alignment, dwell time, and extraction in large-frame AR systems. Three enlarged forward ports help vent excess gas, making the design particularly useful in suppressed or short-barreled configurations. A case-hardened 8620 carrier, 9310 bolt, precision-ground bearing surfaces, and black nitride treatment provide a durable, low-friction operating assembly for compatible .308 Win and 6.5 Creedmoor builds.
Note: This BCG is designed for San Tan Tactical’s AR-10 .308 / 6.5 Creedmoor configuration. Large-frame AR components are not standardized to the same degree as AR-15 parts, so compatibility should be verified when combining receivers, barrels, and bolt carrier groups from different manufacturers.
Specifications
- Brand: San Tan Tactical
- Model: Enhanced Bolt Carrier Group
- MPN: STT-BCG-308
- Caliber Compatibility: .308 Win / 6.5 Creedmoor
- Carrier Material: Case-hardened 8620 steel
- Bolt Material: Case-hardened 9310 steel
- Cam Pin: Hardened 4340 steel
- Firing Pin: AISI 8740 steel, hard chrome coated
- Gas Ports: 3 enlarged forward ports
- Testing: Magnetic Particle Inspected (MPI) and High Pressure Tested (HPT)
- Finish: Black nitride
- Color: Black
- Country of Origin: USA
What’s Included
- 1x San Tan Tactical Enhanced .308 / 6.5 Creedmoor Bolt Carrier Group
