Product DescriptionThe CMMG Mk3 bolt carrier group is a complete .308 Winchester/7.62x51mm NATO BCG engineered for Mk3/DPMS-pattern large-frame rifles. Built with durable steel components and finished in black phosphate, it features a chrome-lined carrier to support smooth cycling and long-term wear resistance in hard-use range or duty setups.Product Highlights Complete Mk3 / DPMS-pattern .308 bolt carrier group assembly for large-frame AR platforms Black phosphate exterior finish for corrosion resistance and reduced glare Chrome-lined carrier to enhance durability and ease of cleaning 8620 steel carrier with 9310 steel bolt and S7 tool steel extractor (per published specs) Designed for .308 Winchester / 7.62x51mm NATO rifles such as the CMMG Mk3Specs Brand: CMMG Manufacturer Part Number: 38BA423 UPC: 815835012483 Caliber/Chamber Compatibility: .308 Winchester / 7.62x51mm NATO Platform Compatibility: CMMG Mk3; DPMS-pattern large-frame (AR-10/LR-308 pattern) Finish: Phosphate (Black) Carrier: 8620 steel, chrome-lined Bolt: 9310 steel Extractor: S7 tool steelDisclaimer: 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 product's manufacturer.