9mm Bolt Carrier Group BCG Nickel Boron for GLOCK and COLT Mags, Full Ramp9MM Bolt carrier
group for your AR15 9MM upper. Nickel Boron exterior. The carrier includes the proper 9mm gas key. Gas key is secured to
carrier via USGI domestic mfg Grade 8 fasteners. These properly hardened parts insure a strong staking and
proper gas system functioning. Full ramp on carrier that works with standard rounded hammers eliminates the need for a special, more expensive bcg need for use with notched hammers. Fits and operates just fine in any standard AR-15 9mm upper receiver.