FightLite MCR Dual Feed Upper M-LOK 12.5″ 5.56 NATO

The FightLite Industries MCR Dual Feed upper is a drop-on upper receiver assembly designed to fit MIL-Spec AR-15/M16 lowers without permanent modification. It provides dual-feed capability, accepting standard AR15/M16 magazines or M27 linked ammunition, and is built around a quick-change barrel system for rapid configuration changes. The system employs a short-stroke gas piston for enhanced reliability and a MIL-STD 1913 co-planar handguard with M-LOK attachment points for accessories. This upper is intended for operators who require configurable feeding options and a durable, serviceable assembly for sustained use.

Key Specifications

• The caliber is .223 REM/5.56 NATO.
• The barrel measures 12.5 inches and is described as a quick-change, chrome-lined barrel.
• The barrel twist is 1:7 RHT.
• The barrel threading is 1/2-28 TPI.
• The operating system is a short-stroke gas piston.
• The feed system is dual-feed, accepting AR15/M16 magazines and M27 linked ammunition.
• The upper receiver is machined from 7075-T6 billet material.
• The feed tray is precision machined billet steel.
• The finish is manganese phosphate with Type III Class 2 hardcoat anodize, black.
• The handguard features a MIL-STD 1913 rail at 12 o'clock and M-LOK slots at 3, 6 & 9 o'clock.

Supplied components include a quick-change barrel handle, main action spring, bolt catch, carbine stock spacer, and 100 M27 links. The assembly is offered to integrate with standard AR-15 type lowers and to provide configurable feeding options without permanent changes to the host lower.

The MCR Dual Feed upper is a practical choice for users seeking a robust, configurable upper receiver assembly that balances modularity and serviceability. Its quick-change barrel system, dual-feed capability, and durable construction make it suitable for experienced operators and armorers who value flexible feeding options and dependable mechanical design.