CMMG Upper Group Banshee 9mm 5" Black

The CMMG Upper Group Banshee 9mm 5" Black is a purpose-built upper receiver assembly designed for operators who demand reliable, compact firepower in a modern platform. Built on CMMG's reputation for precision manufacturing, this 9mm upper delivers the handling characteristics law enforcement and tactical professionals expect—reduced recoil impulse, lower noise signature, and magazine compatibility with common duty ammunition. The 5-inch barrel length balances velocity retention with portability, making it ideal for close-quarters scenarios.

This upper assembly features a modern direct-impingement design optimized for 9mm Luger cartridges, delivering consistent cycling and minimal wear on bolt components compared to larger-caliber platforms. The black anodized finish provides corrosion resistance and professional aesthetics while reducing glint under tactical lighting. Weighing 3.03 lbs, this upper remains lightweight and maneuverable, critical for tactical applications.

The compact profile accommodates standard AR-pattern lower receivers, enabling field-proven ergonomics and controls familiar to military and law enforcement personnel. Operators building duty rifles, personal defense weapons, or compact training systems benefit most from this configuration. The 9mm platform reduces ammunition costs for high-volume training and operational use.