FailZero M16/M4 Complete Bolt Carrier Group 5.56mm Black Nitride

The FailZero M16/M4 Complete Bolt Carrier Group is designed for reliable performance in your AR-15 platform. This 5.56mm BCG features a durable black nitride finish that enhances corrosion resistance and reduces friction for smoother operation. Its drop-in design allows for easy installation into most mil-spec M16/M4/AR-15 uppers, making it a convenient upgrade for any firearm enthusiast. Constructed from high-quality steel, this BCG ensures longevity and consistent performance under pressure. Whether you're building a new rifle or upgrading an existing one, this FailZero bolt carrier group is a solid choice for enhancing your firearm's reliability and accuracy.