FightLite MCR Dual-Feed 16.25" Upper 5.56x45mm 1:7 Mil-Std 1913 Picatinny Rail, Black

The MCR (Mission Configurable Rifle) belt-fed upper receiver assembly revolutionizes firearm versatility by seamlessly integrating with standard AR/M4-type uppers and fitting any MIL-Spec lower receiver without requiring permanent modifications. Engineered for ultimate compatibility, this cutting-edge system is rearward compatible with AR-15/M16 models dating back to 1963. Setting a new benchmark in performance, the MIL-Spec MCR 5.56x45mm DFR enhances our proven MCR technology with critical upgr