FightLite DFX, Drop-On Upper Receiver Group, 223 Remington/5.56 NATO, 16.25" Barrel, Fits AR15 Lower Receivers, Gas-Piston & Pusher-Rod System, Closed Bolt, Black, Accepts STANAG Pattern Magazines, Belt-Fed M27 Links, and 100/200 Round SAW Drums, Includes (100)-M27 Links

The revolutionary and patent-pending FiteLite DFX (Dual-Feed Conversion) is a compact and lightweight "drop-on" upper receiver group that readily fits all MIL-Spec AR15/M16 or M4 pattern lower receivers and delivers reliable, belt-feed performance at your fingertips! In addition to feeding from M27 linked ammunition, the innovative DFX retains the ability to seamlessly transition to standard box type AR15/M16 magazines at user discretion, hence its patented Dual-Feed capability. • Gas-Piston Operation • Heavy Duty, Free-Floating Fixed Barrel System • Free-Floating Slimline Picatinny Rail Handguard • No Permanent Modification Required to the Lower Receiver • Includes (100)-M27 Links