10.5" 5.56 NATO upper with 10" RPR
10.5" 5.56 NATO upper with 10" RPR

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MSRP: $339.95

Stock Status:Ready to build; check lead times

Availability: Usually Ships in 2 to 4 Weeks
Product Code: FU10.5-5.56M4-10RPR


The Radical Firearms 10.5" M4 profile 5.56mm 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" 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. ***Actual product may vary depending on availability***

SKU: FU10.5-5.56M4-10RPR
UPC: 816903021895
MFR#: RF00178

  • Barrel Length: 10.5"
  • Gas System: Carbine Length
  • Barrel Profile: M4 Profile
  • Barrel Material: 4140 Chrome Moly Vanadium
  • Barrel Finish: Melonite
  • Muzzle Thread: 1/2x28
  • Chamber: 5.56mm
  • Twist Rate: 1:7
  • 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: M-Lok Thin Rail
  • Handguard Length: 10"

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