NBS 9mm Bolt Carrier Group - Black Nitride - w/ Light Firing Pin Springs

If you are looking to build a 9mm Rifle, then this NBS 9MM BCG is exactly what you will need to ensure smooth cycling. Our bolts come ramped and in a smooth black nitride finish to ensure longevity.The NBS 9mm BCG is designed to work with both Colt and Glock style AR9’s. These are also tungsten weighted to proper spec for reliable and safe use.