9mm Bolt Carrier Group - Black Nitride

9mm Bolt Carrier Group - Black Nitride Building a 9mm rifle? This 9mm Bolt Carrier Group (BCG) ensures smooth cycling and reliable performance. Machined from 8620 steel and finished with a durable QPQ Black Nitride coating, it offers longevity and corrosion resistance. Designed to work with both Colt and Glock-style AR9s, the BCG is tungsten-weighted to proper spec for safe use and features a ramped bolt for compatibility with a standard AR-15 hammer. With a removable weight, this versatile BCG is a perfect fit for your 9mm build, delivering dependable, efficient operation. Features Machined from 8620 Steel QPQ Black Nitride Finish Compatible with GLOCK Magazines Ramped bolt for a standard AR-15 hammer Features a removable weight *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*