CMMG 55BA22C UPR Rec is a precision-engineered upper receiver assembly designed for AR-15 platforms. Built by CMMG, this MK4 UPR (Upper Receiver) Assembly offers enhanced durability and compatibility with standard AR-15 parts. Ideal for custom builds or upgrades, it features a mil-spec design with a sleek finish.
- Brand: CMMG
- Model: MK4 UPR Receiver Assembly
- Material: High-grade aluminum
- Finish: Matte black
- Compatibility: Standard AR-15 lower receivers
- Weight: Approximately 1.2 lbs
Perfect for builders seeking reliability and performance. Free FFL transfer to any Tennessee dealer.





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