CMMG Banshee Mk4 .22 LR 4.5" Monolithic aluminum upper receiver Rifle

The CMMG Banshee Mk4 .22 LR 4.5" monolithic aluminum upper receiver rifle delivers precision and reliability in a compact, lightweight platform ideal for training, precision shooting, and tactical skill development. Built for shooters who demand accuracy without the recoil and cost of center-fire ammunition, this rifle bridges the gap between full-power tactical systems and dedicated .22 LR platforms. Law enforcement and military personnel use .22 LR variants for low-recoil marksmanship courses, zeroing procedures, and ammunition-efficient practice without sacrificing the ergonomics of modern AR-platform handling.

The monolithic aluminum upper receiver eliminates traditional rail interfaces, creating a unified, rigid structure that minimizes flex and improves accuracy consistency across extended shooting sessions. Chambered in .22 LR, this rifle generates minimal recoil impulse, allowing faster target reacquisition and reduced shooter fatigue—critical advantages during high-round-count training evolutions. The 4.5-inch barrel provides compact handling characteristics while maintaining sufficient velocity for reliable function and accuracy to 50 yards and beyond. At 8.2 lbs unloaded, the Banshee Mk4 remains mobile and manageable, whether mounted with optics for precision work or deployed as a training platform alongside center-fire duty weapons.

This rifle is purpose-built for serious shooters, instructors, and operators who prioritize shot placement and ammunition economy during high-volume training. Law enforcement agencies and tactical training facilities benefit from the low-recoil characteristics for firearms instruction, while civilian competitors use the platform for 22LR sport shooting and transition drills. The compact 4.5-inch upper integrates seamlessly with standard AR-15 lower receivers and components, ensuring compatibility with existing accessories and enabling rapid caliber conversion for multi-purpose training environments. Install on any AR-15 lower receiver, mount your preferred optic to the monolithic upper, and begin executing precision-focused shooting programs with minimal noise signature and maximum round count efficiency.