Del-Ton AR-15 Extreme Duty A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel

Product #: 745887 Del-Ton #: EX100 UPC #: 848456001130
Ships 12/03/2015 from MidwayUSA
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  • Information
The Del-Ton complete upper receiver assembly features a flat top upper receiver with a 16" M4 profile FNH hammer-forged barrel with double chrome lining. The 5.56x45mm NATO chamber, 1 in 7" twist, and M4 feed ramps ensure reliability with a wide variety of commercial and surplus ammunition. The M4 upper features a carbine length gas system and sight radius. The barrel is threaded 1/2"-28 with an A2 flash hider. Steel parts are finished with a phosphate coating; the aluminum upper is hard-coat anodized.


Technical Information


  • Upper Receiver: A3 Flat-Top
  • Barrel Length: 16"
  • Barrel Contour: M4 Government
  • Barrel Material: Hammer Forged CMV
  • Muzzle Thread Pattern: 1/2"-28
  • Chrome Lined: Yes (FNH Double Chrome Lined)
  • Twist Rate: 1 in 7"
  • Chamber: 5.56x45mm NATO chamber
  • Muzzle Device: A2 Flash Hider
  • Gas System Length: Carbine
  • Gas Block Diameter: 0.750"
  • Handguard: GlacierGuard
  • Sights: A2 Front Sight Base attached with Taper Pins
  • Bolt Carrier Assembly Included: Yes (8620 Steel Carrier Assembly)
  • Bolt Carrier Type: Mil-Spec Bolt Carrier, Phosphate Coated with Chrome-lined interior


Please Note: Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.


Additional Information: The Extreme Duty Upper utilizes a Cold Hammer Forged Barrel made by FNH but since they are made specifically for Del-Ton, there is no FNH stamp found on the barrel. Customers can verify their barrel is an FNH barrel by looking for a stamp that says "MP" meaning Magnetic Particle Inspection.
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