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RF Upper 16" 7.62x39 HBAR Complete Upper with Round Rail: FGS 12" rail
RF Upper 16" 7.62x39 HBAR Complete Upper with Round Rail: FGS 12" rail

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MSRP: $383.95

Stock Status:Ready to build; check lead times
Availability: Current Production Time Up To 4 Weeks
Product Code: CFU16-7.62X39HBAR-12FGS


Charging Handle*:

Muzzle Options*:

***Please select your options on the right hand side for BCG, Charging Handle, and other choices***

The Radical Firearms 10.5" M4 Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, RF Barrel Nut. 16" HBAR Barrel and A2 Flash Hider. Complete upper including Bolt Carrier Group and Charging Handle.

  • 16" HBAR Melonite Barrel 4150V Chromoly
  • 1 in 10" twist rate
  • 5/8x24 TPI
  • MPI 7.62x39 BCG
  • M4 Feed ramps
  • Low Profile Micro Gas Block
  • DGI Stainless Carbine-length gas tube
  • Direct Gas Impingement
  • MIL-STD A2 Flash Hider
  • Radical Firearms 10" FGS (Forward Guard Shield) Round Rail
  • Top Picatinny Rail
  • Allows for the use of Magpul MOE attachments
  • MIL-STD Forged Upper Receiver with Forward Assist, Shell Deflector
  • MIL-STD Charging Handle
  • Made in Houston, Texas U.S.A.!

Average Rating: 5 of 5 Total Reviews: 8 Write a review »

  0 of 0 people found the following review helpful:
fantastic upper May 20, 2017
Reviewer: Andrew from Amherst, NH United States  
I purchased this upper for a build. The upper shipped within a couple of weeks, which was a pleasant surprise. I have since fired 200 rounds of various steel cased ammo through it with no malfunctions.
Also, the system runs fine with the standard carbine buffer/spring in case this was a concern in you build.

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  0 of 0 people found the following review helpful:
Upper for AR10 May 3, 2017
Reviewer: Anonymous Person from NC United States  
I bought this upper as part of an AR10 build. I was please with the upper with the exception of the ejection port cover. That looked a little cheap to me. Once I received the gun and took it out and shot it, I was more than pleased. A common problem with 7.62's is the light primer strikes and magazine feed issues. I looked at the shell casings from the first 30 rounds and the primer strikes were consistent and deep. Not a single issue. I am using C Products Defense mags and not a single feed issue with it and it was loaded with all 30 rounds loaded to the mag. This is the first Radical Firearms product I have purchased but if the same performance is seen in the future as I continue to put more rounds down range, this won't be the last Radical Firearms product I purchase.

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  0 of 0 people found the following review helpful:
Quality upper at a great price November 26, 2016
Reviewer: John Yocum from Rancho Cucamonga , CA United States  
What a pleasure to shoot. I put 200 rounds of Tula ammo thru this upper today with no feeding or ejection problems and 2 light strikes. Very reliable product. I was shooting at a 3x6" plate at 200 yards with no problem.
It took about 10 weeks from order to delivery which I didn't think was bad at all. The customer service department was fantastic when I did email and ask for an update. I would definitely buy more from Radical.

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  1 of 1 people found the following review helpful:
It's a shooter August 13, 2016
Reviewer: DominatorX from Arlington, TX United States  
Added an enhanced firing pin and extra power hammer spring before taking it out for the first time.  Shot steel-cased, Russian ammo for 5 hours and not a single issue........feeding or otherwise.  Using just iron sights, I had shots touching at 50 yards and and several bull's eyes at 100.  I'm sure it would be even better with better quality ammo and just a budget optic.  None the less, this upper is reliable and accurate even with the cheap ammo.

600+ rounds still NO problems
I've used C Products mags exclusively not one issue.  I went target shooting with my son calling shots.  His 556 vs my 762.  It was a tie.  He was using a $300 scope and I was using a $80 UTG.  We matched shot for shot.  We are not marksmen, but I'm convinced.  I have a semi-auto 30-30 that's reliable, accurate, and cheap to shoot.

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  1 of 1 people found the following review helpful:
Superb Accuracy with cheap steel case ammo!! March 21, 2016
Reviewer: CONRAD MCCLURE from NATCHITOCHES, LA United States  
I purchased one of these uppers a few months ago, I also had issues with detonation of the steel case ammo, which is the main reason I got it. I sorted thru the issues I came to grasp wit, changed out the trigger group to a two stage Rockriver, still had issues with detonation. changed out the hammer spring with a Wolff extra power hammer spring & an enhanced firing pen that solved my detonation problems,
10 rd Mag followers I modified to resemble ASC 30 rd & no more issues.
It is very Accurate with cheap ammo 1.5" groups @ 100 yds.

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