Radical Firearms 5.56 NATO Barreled Upper - 7.5"

Manufactured by Radical Firearms
SKU: PABU7.5-5.56
MPN: PABU7.5-5.56
Manufactured by Radical Firearms
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Note: This upper barrel is under 16” and is subject to NFA rules and regulations. It can only be attached to a pistol lower or legally registered SBR lower. Know your local laws before purchasing.

This Radical Firearms AR-15 barreled upper receiver comes with all the features you want and need when finishing your first or even tenth build. With a 7.5” barrel, you can build an extremely compact pistol for the range or even throw it on a legally registered SBR lower for the added benefit of a stock. This short barrel is chambered in 5.56 NATO and features a pistol length gas system for to ensure reliable function with all types of ammo. The barrel is made from 4140 Chrome Moly steel and features a Melonite finish for long lasting durability. A 1:7 twist rate helps to stabilize the most common surplus ammo. All you need to finish this AR upper receiver is a Radical Firearms bolt carrier group and your favorite charging handle.

  • 7.5” 4140 Chrome Moly Barrel with Melonite Coating
  • Chambered in 5.56 NATO
  • M4 barrel Profile
  • M4 Feed Ramps
  • 1:7 Twist Rate
  • A2 style Flash Hider
  • 1/2x28 TPI
  • Low Profile Gas Block
  • Pistol Length Gas System
  • Radical Firearms Forged MIL-STD Upper Receiver
  • MIL-STD Upper Parts Kit
  • RF Dimpled Forward Assist
  • Radical Firearms 7” free float handguard
  • M-LOK attachment slots
  • Made in Houston, Texas U.S.A.!

This Radical 5.56 AR pistol upper comes with a 7” M-LOK rail, so you can quickly attach all your favorite lights or accessories. It also includes a full length picatinny top rail for securely mounting back up sights and optics. The Mil-Spec upper receiver is forged out of high-quality aluminum and is finished with a Mil-Spec parts kit. Compatible with any Mil-Spec lower receiver, you will have a complete AR-15 to take to the range in no time.

Radical Firearms offers law enforcement grade hardware. Crafted with quality materials and covered by their lifetime warranty, Radical Firearms is an outstanding choice for any budget.
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AssemblyBarreled Assemblies
Barrel Coating
Barrel ContourGovernment
Barrel Length7.5
Barrel LiningSalt Bath Nitride
Barrel Material4140 Chrome Moly Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Gas System LengthPistol
Gas System TypeDirect Impingement
Handguard7 in M-LOK Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

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