CMMG Upper Group Banshee MK4 .22LR 4.5" Barrel Black

The CMMG Upper Group Banshee MK4 .22LR 4.5" Barrel Black delivers authentic AR-pattern rifle performance in a rimfire caliber, purpose-built for shooters who demand genuine .22 LR handling without compromise. This upper receiver group is engineered on CMMG's proven Mk4 platform, making it compatible with any standard AR15 lower receiver and purpose-designed CMMG .22 AR conversion magazines.

At 4.5 inches, the barrel length is the shortest option CMMG offers across any caliber, enabling compact overall dimensions while maintaining adequate sight radius for precision aiming. Every upper group arrives fully assembled with a bolt carrier group. The 4.5-inch barrel is optimized for .22 LR ballistics, delivering velocity and accuracy suitable for training, small-game hunting, or high-volume recreational shooting.

This upper suits shooters seeking low-recoil practice alternatives without sacrificing controls familiarity, competitors training between centerfire events, and budget-conscious operators running high round counts. The Banshee platform's design allows for familiar handling and operation, making it an excellent choice for various shooting applications.