The FightLite (FTLT) MCR MIL-SPEC Dual-Feed upper is a drop-on upper receiver assembly designed to work with standard AR/M4-type lowers without permanent modification. It accepts standard AR15/M16 magazines or M27 linked ammunition and is rearward compatible with many AR-platform lowers. The assembly uses a short-stroke gas-piston system and incorporates a 12.5-inch quick-change barrel with M-LOK co-planar handguard for accessory mounting.
Key Specifications
- The caliber is .223 Rem / 5.56 NATO.
- The barrel measures 12.5 inches and is a quick-change design.
- The barrel is threaded.
- The operating system is a short-stroke gas-piston design for enhanced reliability in adverse conditions.
- The feed system is dual-feed, accepting AR15/M16 box magazines and M27 linked ammunition.
- Key receiver components are precision machined 7075-T6 billet parts.
- The muzzle features 1:7 right-hand twist with 1/2-28 TPI threads.
- The handguard is a M-LOK co-planar design for modular accessory mounting.
- The finish is manganese phosphate with Type III Class 2 hardcoat anodize (black) for corrosion and wear resistance.
- Ships with belt-feed main action spring, MIL-Spec H3 buffer, stock spacer, extended bolt catch, mag adapter, compensator, 100 M27 links, and operator’s manual.
The MCR MIL-SPEC Dual-Feed upper provides a versatile, rugged option for operators seeking quick configuration changes between magazine and linked ammunition use. Its combination of quick-change barrel capability, piston operation, and robust materials makes it well suited for applications that require adaptability and durable performance in the field.
