Alex Pro Firearms M16 Bolt Carrier Group 5.56x45mm 300 AAC Blackout Nitride

The Alex Pro Firearms M16 Bolt Carrier Group 5.56x45mm/300 Blk Black Nitride is designed to deliver reliable performance in AR-15 or M16 platforms chambered for 5.56x45mm, 300 AAC Blackout, or .223 Remington, making it a versatile upgrade for shooters who demand consistent function across common calibers. This complete bolt carrier group features a 9310 steel bolt that has undergone heat treatment and shot peening for enhanced durability, paired with a hardened 8620 steel carrier finished in a durable black nitride coating to resist wear and corrosion. It is machined to Mil-Spec standards and incorporates a properly staked gas key, ensuring secure gas system operation and longevity under rapid-fire conditions. The extractor includes a spring and rubber insert for dependable chambering and extraction, while the entire assembly ships drop-in ready for straightforward installation. Ideal for serious riflesmithing, this BCG supports secure, reliable cycling in modern sporting rifles and is well-suited for range days, training, and field use where dependable performance matters.