The Radical Firearms 10.5" HBAR profile 300BLK is a 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.Simply add your BCG,charging handle and you are ready to go. Built with our 10" FGS free float rail system for increased accuracy and keeping your hands cool. 

  • Barrel Length: 10.5"
  • Gas System: Pistol Length
  • Barrel Profile: HBAR Profile
  • Barrel Material: 4140 Chrome Moly Vanadium
  • Barrel Finish: Melonite
  • Muzzle Thread: 5/8x24
  • Chamber: 300BLK
  • Twist Rate: 1:8
  • Barrel Extension: M4 Feed Ramp
  • Gas Block Type: .750 Low-profile Gas Block
  • Muzzle Device: A2 Flash Hider
  • Upper Receiver Material: Forged 7075 T6
  • Upper Receiver Style: M4 Mil-Std
  • Upper Receiver Finish: Type III Anodizing
  • Forward Assist: Yes
  • Dust Cover: Yes
  • Handguard Type: Free Float
  • Handguard Style: Magpul MOE Round Rail
  • Handguard Length: 10"