CMMG Resolute Mk4 Upper Group .22 LR 17" Black - 22B83CCAB

This is a complete AR-15 upper receiver group chambered in .22 LR, designed for plinking, training, and small-game hunting. It features a 17" barrel and is compatible with any standard AR-15 lower receiver and CMMG .22 conversion magazines. The assembly includes a bolt carrier group, ambidextrous charging handle, muzzle brake, and polymer dust cover.