Brownells M16 Bolt Carrier Group w/Serration 5.56x45mm/.300 AAC Blackout/.223 Remington, Chrome

Bring authentic retro style to your AR build with the Brownells M16 chrome 5.56x45mm complete bolt carrier group, designed to match the look and feel of the earliest AR-15 and M16 rifles. This BCG features a bolt machined from high-strength 9310 steel, magnetic particle inspected for reliability and finished in a matte silver chrome for classic aesthetics and superior corrosion resistance. The carrier is made from durable 8620 hardened steel and receives the same robust chrome finish. Every key component - including the extractor, gas key and cam pin - is chrome-plated to ensure smooth operation and long-lasting protection against wear and corrosion. Engineered for compatibility with AR-15 and M16 rifles chambered in 5.56x45mm, .223 Remington and .300 AAC Blackout, this BCG delivers reliable performance across a range of platforms. Available with or without forward assist serrations, you can choose the correct configuration for your retro build. The non-serrated model mirrors the original BCG used in early air force model 601 rifles, while the serrated version reflects the configuration seen in mid-1960s XM16E1s. Each complete BCG includes the bolt, carrier, gas key, firing pin, cam pin and firing pin retaining pin - ready for drop-in installation.Matte silver chrome with enhanced durability9310 bolt, inspected using magnetic particle testingM16 8620 steel carrier (compatible with standard AR-15 riflesThe extractor is equipped with a spring and a rubber insertIncorporates a torqued and staked gas keyCompatible with any cartridge utilizing the 5.56x45mm cartridge case