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 Glock style AR9’s. These are also tungsten weighted to proper spec for reliable and safe use. 

*Incompatibilities exist with Colt magwell adapters and QC10 lowers*

*Endomag 9mm inserts may require minor modification per Mean Arms break-in procedure for ideal function*