GC_UPC FightLite FightLite MCR DUAL-FEED AR-15 Upper Assembly - Black | 5.56 NATO | 16.25” Quick-Change Barrel | Accepts AR-15 Magazines & M27 Linked Ammo | M-LOK Rail-Interface System $6,216.36 MCR-060M show more like this Additional, Calculated in cart BFG Outfitters GC_UPC FightLite FightLite MCR DUAL-FEED AR-15 Upper Assembly - Black | 5.56 NATO | 16.25” Quick-Change Barrel | Accepts AR-15 Magazines & M27 Linked Ammo | M-LOK Rail-Interface System $6,599.99 MCR-060M show more like this Sergeant's Arms