Product Description The San Tan Tactical STT Enhanced Bolt Carrier Group is a complete AR-10 and LR-308 pattern bolt carrier group engineered for durability and reliable cycling. Built with precise manufacturing and a hard-wearing black nitride finish, this enhanced .308 BCG is optimized for suppressor use and designed to support demanding range or duty builds. Key components include a hardened 4340 cam pin, a mil-spec 8740 steel firing pin, and a mil-spec extractor with O-ring, with MPI/HPT testing for added confidence. Product Highlights Complete enhanced bolt carrier group for .308 AR platforms, optimized for suppressor use Black nitride, matte finish for enhanced wear resistance and smooth operation Compatible with .308 Winchester, 7.62 NATO, and 6.5 Creedmoor builds MPI/HPT tested for dependable performance and long-term reliability Quality internals including hardened 4340 cam pin and mil-spec extractor with O-ring Specs Brand: San Tan Tactical Manufacturer Part Number: STT-Enhanced BCG .308 Product Type: Complete Bolt Carrier Group Platform Compatibility: AR-10 / DPMS LR-308 Caliber Compatibility: .308 Winchester, 7.62 NATO, 6.5 Creedmoor Finish: Nitride (Matte Black) Color: Black Features: Enlarged forward ports; optimized for suppressor use Testing: MPI/HPT tested Cam Pin: Hardened 4340 Firing Pin: Mil-spec 8740 steel Extractor: Mil-spec extractor with O-ring UPC: 680599034244 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.