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Radical Firearms 10.5" 7.62x39mm 1:10 Carbine Length HBAR Complete Upper - 10" M-LOK FCR Gen3 Rail

Manufactured by Radical Firearms
SKU: CFU10.5-7.62X39HBAR-10FCR3
MPN: CFU10.5-7.62X39HBAR-10FCR
Manufactured by Radical Firearms
1 Review

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NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.



The Radical Firearms 10.5" 7.62x39mm HBAR Complete Upper is a law enforcement grade, drop-in solution for your next AR build. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC upper receiver provides an outstanding solution for any budget. Arrives at your door with the hard work done. Finish the build with your favorite lower receiver and sights, then head for the range!

The Radical Firearms FCR system is a slim handguard that provides the weight savings you want without sacrificing any of the mounting possibilities you require. This freefloat design offers a monolithic Picatinny rail and plenty of M-LOK attachment points for all your gear.

NOTE: This upper receiver has a barrel that is less than 16” in length and is intended for use in AR pistol or legal short-barreled rifle builds. Other configurations may violate Federal law.

  • 10.5" 41V50 chrome moly vanadium steel HBAR contour barrel with Melonite finish
  • Chambered in 7.62x39mm with a 1:10 twist rate
  • M16 cut bolt carrier group with Melonite finish
  • BCG high pressure tested and magnetic particle inspected
  • Standard charging handle
  • 5/8x24 A2 flash hider
  • 10" Radical Firearms M-LOK FCR rail
  • Gen 3 rail mounting system
  • Made in the U.S.A. in Stafford, Texas!
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AssemblyComplete Assemblies
Barrel ContourHBAR
Barrel Length10.5
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandRadical Firearms
Caliber Gauge7.62X39mm
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard10 in Radical M-LOK FCR Rail
Muzzle DeviceA2 Flash Hider
Twist Rate1:10

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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Accurate and dependable 7.62X39 AR


I do not understand why RF has so many negative comments on the gun forums, and I almost didn't by my first RF because of these comments. Either RF fixed the issues before I bought my first RF rifle last year or your competitors are planting these negative comments. I have much more expensive AR's that I absolutely love, but I do not have any AR's that I feel have given me more value for my money than RF.
<br>To resolve the feeding issues all the 7,62X39 AR's have in common, you need to add an enhanced firing pin ($10), a Wolff heavy hammer spring ($3) and C-Products 7.62X39 AR magazine ($19).
<br>As far as guns I would pick to defend my family, RF 7.62X39 AR's are not going to replace my Daniel Defense AR's, but they are much closer to Daniel Defense than they are to PSA.