Radical Firearms 5.56 Barreled Upper Mid-Length SOCOM M-LOK FCR Rail and Zero Impulse Brake - 16"

Manufactured by Radical Firearms
SKU: FU16-5.56SOC-15FCR-ZS
MPN: FU16-5.56SOC-15FCR-ZS
Manufactured by Radical Firearms
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The Radical Firearms AR-15 upper receiver assembly comes ready to attach to any Mil-Spec lower receiver. It features a forged M4 flat top upper so you can easily attach rifle scopes and red dot sights to the picatinny rail. The upper receiver is does not include BCG or charging handle but does come completed with a Mil-Spec upper receiver parts kit that includes dust cover and forward assist. The barrel is 16” of 4140 chromoly steel with a Melonite coating and is attached via a steel barrel nut. This extremely durable and weather resistant barrel has a 1:7 twist rate designed to stabilize heavier rounds for hunting or target shooting. However, this twist rate is still capable of giving practical accuracy with 55 grain 5.56 NATO ammunition for all your plinking needs. Outfitted to the end of the heavy SOCOM profile barrel is the Zero Impulse muzzle brake for reducing recoil and is attached with 1/2x28 threads. This Barreled upper receiver is an affordable way to finish your AR-15 build with enough money left over for plenty of ammunition and range time.

  • 16” 4140 Chromoly barrel with Melonite coating
  • 5.56 SOCOM profile
  • M4 feed ramps
  • 1:7 twist rate
  • Zero Impulse muzzle brake
  • 1/2x28 TPI
  • Low profile gas block
  • Mid-length gas system
  • Radical Firearms forged Mil-Spec upper receiver
  • Mil-Spec Upper parts kit
  • RF Dimpled forward assist
  • Radical Firearms 15" FCR handguard
  • Integrated M-LOK attachment points on the sides and bottom with continuous picatinny top rail
  • Made in Houston, Texas U.S.A.
  • Does not include BCG or charging handle

This 5.56 barreled upper receiver has a mid-length gas system that is the perfect balance between reliability and soft recoil. Surrounding the barrel and gas system is a 15” free float handguard with M-LOK attachment points. It is the Radical Firearms Gen 3 FCR rail that offers many improvements to other rail systems. It features a full length picatinny top rail that sits flush with the upper receiver and is attached to a steel barrel nut with 8 screws to prevent it from coming loose. 

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 CoatingMelonite
Barrel ContourSOCOM
Barrel Length16
Barrel LiningMelonite
Barrel Material4140 Chrome Moly Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in Radical M-LOK FCR Rail
Muzzle DeviceRadical Firearms Zero Impulse Muzzle Brake
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

Ratings & Reviews

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Real Nice For The Price !!! Fast Shipping !!!

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Real Nice, M Locks Are A Little Short, But I Had The Same Problem With An Aero Precision Forend