The FightLite MCR556DFRM Dual-Feed upper (brand part no. MCR-556-DFRM) is part of FightLite’s Mission Configurable Rifle line, built around a 16.25-inch quick-change barrel and finished with an M-LOK handguard. Like the rest of the MCR series, it accepts standard AR-15/M16 box magazines or M27 linked ammunition, giving operators the flexibility to reconfigure the rifle’s feed method without a separate upper. The upper receiver is machined from 7075-T6 aluminum and rifled at a 1:7 twist rate, and it ships with an adjustable sight set ready to mount on a compatible AR-15/M16/M4 lower.

Key Specifications

• Chambered in 5.56x45mm NATO.
• Barrel measures 16.25 inches.
• Uses FightLite’s quick-change barrel system.
• Accepts standard AR-15/M16 magazines.
• Also accepts M27 linked ammunition.
• Rifled at a 1:7 twist rate.
• Fitted with an M-LOK handguard.
• Machined from 7075-T6 aluminum.
• Ships with an adjustable sight set.
• Part of FightLite’s Mission Configurable Rifle line.

Frequently Asked Questions

What magazines does this upper feed from? Standard AR-15/M16 magazines or M27 linked ammunition.

What handguard does this upper use? An M-LOK handguard.

Buy the FightLite MCR556DFRM Dual-Feed Upper

Get true dual-feed capability with a quick-change barrel system. Order it from our FightLite Industries lineup, part of our AR15 uppers selection, and get it shipped fast from our Lubbock, Texas gun shop.