FightLite Industries MCR 5.56 NATO Complete Upper, 12.5in Barrel

The FightLite Industries Mission Configurable Rifle (MCR) complete upper (brand part no. MCR556DFRS) is the short-barrel counterpart to FightLite’s 16.25in MCR upper, built around a compact 12.5in 5.56x45mm NATO barrel for maneuverability in close quarters. Like the rest of the MCR line, it ships as a fully assembled upper with a one-piece 7075-T6 aluminum handguard machined to the MIL-STD-1913 Picatinny standard, giving continuous mounting space for optics, lights, and accessories. The shorter barrel trims weight and length off the front end while keeping the same modular rail platform shooters expect from FightLite’s MCR series.

Key Specifications

• Chambered in .223 Rem/5.56 NATO for standard rifle-length ammunition.
• Compact 12.5-inch barrel trims length and weight for close-quarters handling.
• 1:7 twist rate stabilizes heavier 5.56 projectiles for consistent accuracy.
• Overall upper length runs approximately 25.5 inches.
• Handguard and top rail are machined from 7075-T6 aluminum to the MIL-STD-1913 Picatinny spec.
• Ships as a complete upper assembly, ready to mount to a compatible AR-15 lower.
• Equipped with adjustable sights for immediate use without a separate optic.

Frequently Asked Questions

How is this different from FightLite’s 16.25in MCR upper? Same modular MCR platform and rail system, just built around a shorter 12.5in barrel for a more compact overall length.

Does it come with sights? Yes, adjustable sights are included on the upper.

Is this a complete upper? Yes, it’s a fully assembled upper ready to mate with a compatible AR-15 lower.

Buy the FightLite Industries MCR 5.56 NATO Complete Upper, 12.5in

Build a shorter, quicker-handling MCR rifle without sourcing a barrel and rail separately. Order the FightLite MCR from our AR15 uppers selection at our Lubbock, Texas gun shop, and we’ll get it ready to ship as soon as it’s available.