Loading...
Loading...
Loading...
Loading...
Fightlite
The Fightlite MCR Mil-Spec Dual Feed Upper is a complete, drop-on upper receiver assembly built to transform a standard AR-15, M16, or M4 lower into a belt-fed rifle capable of accepting both box magazines and M27 linked ammunition. Designed for shooters who demand mission flexibility and reliability in unpredictable conditions, this 16.25-inch upper pairs short-stroke gas-piston operation with a rapid barrel-swap system, all without requiring permanent modifications to your existing lower receiver—it's fully rearward compatible to AR platforms going back to 1963.
What sets the MCR apart is its dual-feed capability: flip a lever and switch between standard AR magazines or linked ammo in seconds, no tools required. The upper is machined from 7075-T6 billet aluminum and features manganese phosphate and Type III hardcoat anodize for maximum corrosion resistance. A dry film lubricant coats critical friction points, ensuring smooth operation in extreme environments. The MIL-STD 1913 rail handguard gives you modern accessory mounting for optics and tactical gear, while the included adjustable sight set gets you running out of the box.
This is serious hardware for serious shooters: law enforcement, professional security, and responsible citizens who refuse to compromise on reliability or adaptability. Gas-piston operation keeps things running clean even when fouling builds up. The quick-change barrel design (swap in 3 seconds) means you can reconfigure your rifle's performance without a gunsmith. Everything ships ready to go—upper, handguard, charging handle, bolt carrier, sights, muzzle brake, 100 M27 links, and manual.
Made in the USA, the MCR Mil-Spec Dual Feed Upper is built to go where standard uppers won't and do what they can't.
| Product Type | Complete Upper Receiver Assembly |
| Caliber | 5.56 NATO |
| Barrel Length | 16.25 inches |
| Barrel Profile | 1:7 Right-Hand Twist, .223 Wylde |
| Bolt Thread Pitch | 1/2"-28 TPI |
| Gas System | Short-Stroke Gas Piston |
| Magazine Compatibility | AR15/M16 box magazines and M27 linked ammunition |
| Upper Receiver Material | 7075-T6 Billet Aluminum |
| Feed Tray Material | Precision Machined Billet Steel |
| Finish | Manganese Phosphate and Type III Class 2 Hardcoat Anodize (Black) |
| Handguard | MIL-STD 1913 Rail Interface System |
| Bolt Carrier | Full-Auto |
| Lower Receiver Compatibility | MIL-Spec AR-15, M16, M4 (no permanent modifications) |
| Rearward Compatibility | AR-15/M16 platforms from 1963 forward |
| Country of Origin | USA |
The upper ships as a complete assembly ready to install on your lower receiver. Included are the upper receiver, MIL-STD 1913 rail handguard, charging handle, full-auto bolt carrier, adjustable sight set, quick-change barrel handle, RIP brake muzzle compensator, MIL-Spec H3 buffer, carbine stock spacer, extended bolt catch, magazine adapter, 100 M27 links, and operator's manual.
Yes. The MCR Mil-Spec Dual Feed Upper is a drop-on assembly designed to interchange with standard MIL-Spec AR-15, M16, or M4 lower receivers without permanent modification. It's also rearward compatible with AR platforms manufactured as far back as 1963.
Exactly. The dual-feed system lets you switch between standard AR15/M16 box magazines and M27 linked ammunition. The changeover takes seconds and requires no tools.
The 16.25-inch barrel features a quick-change system that allows a full swap in approximately 3 seconds, with no tools required. The barrel is a 1:7 right-hand twist in .223 Wylde chambering.
Fightlite
The Fightlite MCR Mil-Spec Dual Feed Upper is a complete, drop-on upper receiver assembly built to transform a standard AR-15, M16, or M4 lower into a belt-fed rifle capable of accepting both box magazines and M27 linked ammunition. Designed for shooters who demand mission flexibility and reliability in unpredictable conditions, this 16.25-inch upper pairs short-stroke gas-piston operation with a rapid barrel-swap system, all without requiring permanent modifications to your existing lower receiver—it's fully rearward compatible to AR platforms going back to 1963.
What sets the MCR apart is its dual-feed capability: flip a lever and switch between standard AR magazines or linked ammo in seconds, no tools required. The upper is machined from 7075-T6 billet aluminum and features manganese phosphate and Type III hardcoat anodize for maximum corrosion resistance. A dry film lubricant coats critical friction points, ensuring smooth operation in extreme environments. The MIL-STD 1913 rail handguard gives you modern accessory mounting for optics and tactical gear, while the included adjustable sight set gets you running out of the box.
This is serious hardware for serious shooters: law enforcement, professional security, and responsible citizens who refuse to compromise on reliability or adaptability. Gas-piston operation keeps things running clean even when fouling builds up. The quick-change barrel design (swap in 3 seconds) means you can reconfigure your rifle's performance without a gunsmith. Everything ships ready to go—upper, handguard, charging handle, bolt carrier, sights, muzzle brake, 100 M27 links, and manual.
Made in the USA, the MCR Mil-Spec Dual Feed Upper is built to go where standard uppers won't and do what they can't.
| Product Type | Complete Upper Receiver Assembly |
| Caliber | 5.56 NATO |
| Barrel Length | 16.25 inches |
| Barrel Profile | 1:7 Right-Hand Twist, .223 Wylde |
| Bolt Thread Pitch | 1/2"-28 TPI |
| Gas System | Short-Stroke Gas Piston |
| Magazine Compatibility | AR15/M16 box magazines and M27 linked ammunition |
| Upper Receiver Material | 7075-T6 Billet Aluminum |
| Feed Tray Material | Precision Machined Billet Steel |
| Finish | Manganese Phosphate and Type III Class 2 Hardcoat Anodize (Black) |
| Handguard | MIL-STD 1913 Rail Interface System |
| Bolt Carrier | Full-Auto |
| Lower Receiver Compatibility | MIL-Spec AR-15, M16, M4 (no permanent modifications) |
| Rearward Compatibility | AR-15/M16 platforms from 1963 forward |
| Country of Origin | USA |
The upper ships as a complete assembly ready to install on your lower receiver. Included are the upper receiver, MIL-STD 1913 rail handguard, charging handle, full-auto bolt carrier, adjustable sight set, quick-change barrel handle, RIP brake muzzle compensator, MIL-Spec H3 buffer, carbine stock spacer, extended bolt catch, magazine adapter, 100 M27 links, and operator's manual.
Yes. The MCR Mil-Spec Dual Feed Upper is a drop-on assembly designed to interchange with standard MIL-Spec AR-15, M16, or M4 lower receivers without permanent modification. It's also rearward compatible with AR platforms manufactured as far back as 1963.
Exactly. The dual-feed system lets you switch between standard AR15/M16 box magazines and M27 linked ammunition. The changeover takes seconds and requires no tools.
The 16.25-inch barrel features a quick-change system that allows a full swap in approximately 3 seconds, with no tools required. The barrel is a 1:7 right-hand twist in .223 Wylde chambering.
