FightLite Mission Configurable Rifle Dual-Feed Upper Receiver Assembly, 5.56 NATO, 16.25" Quick-Change Barrel, Threaded 1/2X28, Fits AR-15 Lower Receiver, M-LOK Handguard, Adjustable Sight Set, Manganese Phosphate Finish, Black, Includes Buffer, Spacer, Bolt Catch, Adapter and Compensator, Includes (100)-M27 Links

FightLite's groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models produced as early as 1963. The MIL-Spec MCR 5.56 DFR takes their standard MCR technology to a whole new level and includes all of the accessory items that are included in their standard MCR government product along with Dry Film Lubrication on critical high-friction surfaces for extra performance in extreme conditions. • Drop-On (MIL-Spec) Upper Receiver Assembly • Short-Stroke Gas Piston Operation • Dual-Feed-Accepts All AR15/M16 Magazines & M27 Linked Ammunition • Precision Machined 7075-T6 Billet Upper Receiver • Full-Auto Bolt Carrier • Ships with Belt-Feed Main Action Spring, MIL-Spec H3 Buffer, Carbine Stock Spacer, Extended Bolt Catch, Mag Adapter, RIP Brake Muzzle Compensator • (100) M27 Links & Operator's Manual