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 durability
9310 bolt, inspected using magnetic particle testing
M16 8620 steel carrier (compatible with standard AR-15 rifles
The extractor is equipped with a spring and a rubber insert
Incorporates a torqued and staked gas key
Compatible with any cartridge utilizing the 5.56x45mm cartridge case

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