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.
- Machined from 8620 Steel
- QPQ Black Nitride Finish
- Compatible with both GLOCK and Colt Magazines
- Ramped bolt for a standard AR-15 hammer
- Features removable weight