Radical Firearms Complete Upper Assembly 5.56NATO 10.5″


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adical firearms complete 

Adical  firearms complete Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver. This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, Barrel Nut. 10.5″ M4 Profile Barrel and A2 Flash Hider, Bolt Carrier Group and Charging Handle.

Radical Firearms Complete Upper Assembly 5.56NATO 10.5″ Specifications:

Color: Black

Caliber: 5.56x45mm NATO

Barrel Length: 10.5 in

Barrel Twist Rate: 1-7

Gun Rail: M-LOK

  • Description

Radical Firearms manufacture their line of custom built AR-15s, AR-10s, bolt guns and silencers in house. They are a true manufacturer, not an assembly shop, with a fully tooled and operational gunsmithing facility. They offer a great selection of firearms and parts that are built in Texas for the most discerning firearms enthusiast and professional. They also offer an exclusive Lifetime Warranty on all products manufactured by Radical Firearms as long as you own the product! The Radical Firearms AR-15 upper receiver assembly comes ready out of the box to attach to any Mil-Spec lower receiver. It has a forged M4 railed upper, so you can easily attach scopes and red dot sights to the MIL-STD rail. The upper receiver includes the bolt carrier group, MIL-STD charging handle, ejection port cover, and forward assist. The barrel is 16″ of 4140 Chromoly steel with a Melonite coating and is attached via a steel barrel nut. The barrel has a 1:7 twist, designed to stabilize heavier 556 NATO and 223 Remington ammo at intermediate ranges. This twist rate will still stabilize standard 55-grain FMJ ammo as well, so your range time won’t be affected by not being able to find 62 grain Gold Dots. Attached to the heavy SOCOM profile barrel is an A2 flash hider. This complete upper receiver is an excellent addition to your AR-15 build.


  • 16″ M4 Melonite Barrel
  • 4150V Chrome Moly
  • 1 in 7″ twist rate
  • 5.56 NATO Chamber
  • M4 Feed ramps
  • Low Profile Micro Gas Block
  • Stainless Carbine-length gas tube
  • Direct Gas Impingement
  • Mil-Spec A2 Flash Hider
  • 12″ Radical Firearms Billet Hand Guard
  • Forged Upper Receiver with Forward Assist, Shell Deflector
  • Made in Houston, Texas U.S.A.!


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