The Brownells M16 Chrome 5.56 Complete Bolt Carrier Group features a bolt machined from 9310 steel, which is magnetic particle inspected and finished with a matte silver chrome finish. The carrier is fabricated from 8620 hardened steel and also receives the same durable chrome application, while the extractor, gas key and cam pin are also chromed to ensure all moving parts are corrosion resistant. This model without serrations is similar to the original BCG found on early AR-15s, such as the Air Force 601.
Designed to work easily and reliably in any AR-15 or M16 rifle chambered in 5.56x45mm, 300 AAC Blackout or .223 Remington, this complete bolt carrier group includes everything you need: a bolt, bolt carrier, gas key, firing pin, cam pin, and a firing pin retaining pin. The finish matches the bolt found on the earliest AR-15 & M16 rifles, making it an ideal choice for retro builds and period-correct restorations.
The bolt is machined from 9310 steel and magnetic particle inspected for quality assurance, ensuring reliable performance with every round. The bolt-carrier group weighs 12 ounces, providing the heavier standard profile preferred for consistent functioning across various ammunition types and gas system configurations.
