Fightlite Industries MCR556DFRM | 5.56 NATO | 16.25″

The Fightlite Industries MCR (Mission Configurable Rifle) MCR556DFRM is a drop-in MIL-Spec upper assembly designed to fit standard AR-15/M16 lower receivers without permanent modification. It features a 16.25″ quick-change barrel, short-stroke gas piston operation, and a dual-feed design that accepts both AR magazines and M27 linked ammunition. The assembly uses precision machined components and dry film lubrication on high-friction surfaces for durability and reliable operation in demanding conditions. Typical applications include use as an optic-ready carbine for duty or range-focused support/accuracy work in competitive or professional settings.

Product Specifications

• The cartridge is .223 Rem / 5.56 NATO.
• The barrel measures 16.25 inches and is a quick-change design.
• The rate of twist is 1:7.
• The muzzle thread is 1/2-28 TPI.
• The operation uses a short-stroke gas piston system for enhanced reliability.
• The feed system is dual-feed and accepts AR-15/M16 magazines and M27 linked ammunition.
• The upper receiver is machined from 7075-T6 billet aluminum.
• The feed tray is precision machined billet steel.
• The finish is manganese phosphate with Type III Class 2 hardcoat anodize (black).
• The handguard style is a M-LOK co-planar rail-interface system.
• The sighting set is adjustable.
• The system includes a 16.25″ quick-change barrel handle for rapid barrel swaps.
• Included accessories ship with the upper and feature a RipBrake muzzle compensator, MIL-Spec H3 buffer, carbine stock spacer, extended bolt catch, magazine adapter, belt-feed main action spring, and (100) M27 links.
• The UPC is 859714006910.

This MCR DFR upper presents a versatile, factory-configured upgrade path for AR-15/M16 platforms where dual-feed capability, quick-change barrel flexibility, and a robust piston system are priorities. Its mix of billet components, M-LOK interface, and the included accessory package make it appropriate for users seeking a modular carbine or a compact support-style upper for range and professional applications where reliability and rapid configuration changes matter.