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FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver Heavy Short-Stroke Gas Piston 1-7 Twist 1/2x28 Manganese

FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver Heavy Short-Stroke Gas Piston 1-7 Twist 1/2x28 Manganese

FightLite Industries · Upper Receiver

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Best price

$3,995.00at OpticsPlanet

Out of stock checked Oct 22, 2026

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OpticsPlanet $3,995.00checked Oct 22, 2026 Out of stock Buy at OpticsPlanet

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Dashed line = out of stock. Tracking since Oct 14, 2026.

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About this part

The FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver Heavy Short-Stroke Gas Piston 1-7 Twist 1/2x28 Manganese is a 16.25" 5.56 / .223 upper receiver from FightLite Industries. One store lists it, OpticsPlanet at $3,995.00.

Fits and works with

Caliber
5.56 / .223 · Shop matching ammo
Bolt
Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Muzzle thread
1/2x28 · Muzzle devices
Barrel length
16.25" · Handguards

Specifications

Manufacturer
FightLite Industries
Platform
AR-15
Caliber
5.56 mm NATO

From the manufacturer

FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver Heavy Short-Stroke Gas Piston 1-7 Twist 1/2x28 Manganese. 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 The new DFX is specifically designed for responsible armed citizens law enforcement and professional security personnel who wish to upgrade their rifle or carbine for increased performance and function. Standard features include gas-piston operation for increased reliability in all weather conditions a heavy duty free-floating fixed barrel system for enhanced accuracy and a free-floating slimline MIL-STD 1913 rail handguard system for mounting lights lasers grips bipods and other accessory items. The high-performance DFXbolt and barrel extension group is designed from the ground up to safely withstand the relentless and punishing demands of the sustained fire role. No permanent modification is required to the lower receiver for installation which is accomplished in minutes and everything that is necessary is included with the DFX kit which consists of a detailed Operator's Manual a powerful recoil spring for reliable stripping of linked ammunition a modified bolt catch for use with the DFX upper and 100 brand new USGI M27 ammunition links to get you started. 100percent invented designed and made in our great USA our new DFX Dual-Feed upper is supported by a robust supply chain of in-stock spare parts and accessory items. It is further backed by an experienced design staff and professional shooters machinists and craftsmen who are particularly skilled in the art of accurate sustained-fire weapon systems. NOTICE: This product is currently restricted for sale to or possession by individuals in the States of California (unless customer has a valid High Capacity Permit issued by California) Colorado Connecticut Illinois Maryland Massachusetts New Jersey New York Washington and Washington D.C. and may also be restricted in other jurisdictions. Laws relating to firearms and firearm accessories frequently change and evolve and it is the buyer's responsibility to be aware of and to always comply with all laws and regulations. All FightLiteIndustries products are ITAR controlled and may not be exported from the United States of America without prior US Government authorization. Product design features and/or specifications are subject to change without notice or incurring obligation. Specifications for FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver: Manufacturer: FightLite Caliber: .223 Remington 5.56x45mm NATO Overall Length: 26 in Barrel Length: 16.25 in Barrel Profile: Heavy Barrel Twist Rate: 1-7 Firearms Threads Per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Finish: Manganese Phosphate Color: Black Gun Model: M4 M16 AR-15 Fabric/Material: 7075-T6 Aluminum Handguard Style: Quad Rail Gun Rail: MIL-STD 1913 Gun Type: Rifle Gun Make: AR Platform Gas System Type: Short-Stroke Piston Bolt Carrier Group Included: MIL-SPEC Charging Handle Included: MIL-SPEC Magazine Included: No Handle Color: Black Package Contents: FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver Main Action Spring Bolt Catch Carbine Stock Spacer (100) M27 Links Operators Manual What firearm models does the manufacturer say FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver is compatible with? The manufacturer says that FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver is compatible with AR-15 M4 M16FightLite DFX-001: DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 16.25in Upper Receiver Heavy Short-Stroke Gas Piston 1-7 Twist 1/2x28 Manganese Phosphate/Anodized Black

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$3,995.00 at OpticsPlanet
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