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RSR Part #: RAFCFU85-300HBAR-7RPR Manufacturer Part #: CFU8.5-300HBAR-7RPR

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Radical Firearms, Complete Upper Assembly, 300 Blackout, 8.5" Barrel, 1:7 Twist, Black Finish, 7" RPR MLOK Handguard, A2 Flash Hider


WARNING: This product can expose you to chemicals including Nickel Acetate, which is known to the State of California to cause cancer. For more information visit

  • Length: 8.5"
  • Pistol Length
  • Finish: Melonite
  • Muzzle Thread: 5/8x24
  • Chamber: 300BLK
  • Twist Rate: 1:8
  • M4 Feed Ramp
  • Upper Receiver Style: M4 Mil-Std
  • Upper Finish: Type III Anodizing
  • Free Float Handguard M-LOK Thin Rail
  • Handguard Length: 7"

Product Description

The Radical Firearms 8.5" HBAR profile 300BLK is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter wanting to finish out that build and hit the range. Built with the 7" RPR free float rail system for increased accuracy and keeping your hands cool. No matter what your style of shooting is, Radical Firearms has you covered.