Fightlite MCR Dual-Feed Upper | MCR556DFR | 5.56 | 16.25″

The Fightlite Industries MCR Dual-Feed upper is a drop-on MIL-Spec upper assembly designed to fit AR-15/M16/M4 type lower receivers without permanent modification. It provides dual-feed capability—accepting standard AR-15/M16 box magazines or M27 linked ammunition—and uses a short-stroke gas piston for robust operation. The upper includes a MIL-STD 1913 co-planar handguard for mounting optics and accessories and ships with a selection of integration parts and links. Typical applications include range training and duty/field operations where feed flexibility and modularity are priorities.

Product Specifications

• The UPC is 859714006903.
• The manufacturer is Fightlite Industries.
• The model is Mission Configurable Rifle (MCR).
• The manufacturer’s part number is MCR556DFR.
• The cartridge/caliber is .223 REM/5.56 NATO.
• The barrel length is 16.25″.
• The rate of twist is 1:7 RHT.
• The barrel type is Steel.
• The muzzle thread is 1/2-28.
• The finish is Anodized.
• The handguard style is MIL-STD 1913 Rail.
• The feed system is Dual-Feed (accepts AR-15/M16 magazines and M27 linked ammo).
• The upper receiver is machined from 7075-T6 billet aluminum.
• The action uses a short-stroke gas piston operation.
• Included accessories are RipBrake muzzle compensator, (100) M27 links, belt-feed main action spring, MIL-Spec H3 buffer, carbine stock spacer, extended bolt catch, and mag adapter.

Constructed to MIL-Spec standards and finished for corrosion resistance, this MCR Dual-Feed upper is aimed at users who value a serviceable, modular platform with multiple feed options. Its billet receiver, robust feed tray, and included integration parts make it a practical choice for projects that require a drop-in upgrade to a MIL-Spec lower and immediate use in common operational configurations.