CMMG BANSHEE .22LR 4.5" Upper Group - Compact Precision Turn your AR into a precision rimfire machine with the CMMG BANSHEE .22LR 4.5" Upper Group. Built on the MK4 platform, this isn't just a replica-it's a true AR chambered in .22LR, compatible with any standard AR-15 lower receiver. Designed to work seamlessly with CMMG's .22LR AR conversion magazines, it's a versatile setup ideal for training, plinking, or small game. Each upper comes fully equipped with CMMG's Zeroed accessories, including a polymer dust cover, .22LR ambidextrous charging handle, and .22LR flash hider. Offered in a variety of durable Cerakote finishes, the BANSHEE upper includes the bolt carrier group, giving you everything you need for a smooth, out-of-the-box upgrade.