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Radical Firearms 16" 7.62x39mm 1:10 Carbine Length HBAR Rifle Kit - 15" M-LOK FCR Gen3 Rail and Zero Impulse Brake

Manufactured by Radical Firearms
Manufactured by Radical Firearms
6 Reviews

Out of Stock

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



The Radical Firearms 16" 7.62x39mm HBAR Rifle Kit is law enforcement grade hardware. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC rifle kit is an outstanding choice for any budget.

Includes the Radical Firearms FCR system, 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.

  • 16" 41V50 chrome moly vanadium steel HBAR barrel
  • Chambered in 7.62x39mm with a 1:10 twist rate
  • M16 cut bolt carrier group with Melonite finish
  • BCG magnetic particle inspected
  • Standard charging handle
  • 5/8x24 Zero Impulse Muzzle Brake
  • 15" Radical Firearms M-LOK FCR rail
  • Gen 3 rail mounting system
  • MIL-SPEC lower parts kit
  • Billet mag button
  • Billet bolt catch
  • Billet safety selector
  • 6-position MIL-SPEC receiver extension tube
  • Carbine buffer
  • Carbine buffer spring
  • Mission First Tactical Battlelink Minimalist stock
  • Mission First Tactical Pistol Grip
  • Made in the U.S.A. in Stafford, Texas!
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Barrel CoatingMelonite
Barrel ContourHBAR
Barrel Length16
Barrel LiningMelonite
Barrel Material41V50 Chrome Moly Vanadium Steel
Bolt Carrier GroupM16 Bolt Carrier
Bolt Material9310 Steel
BrandRadical Firearms
Caliber Gauge7.62X39mm
Carrier FinishMelonite
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
Feed RampsM4
Gas System LengthCarbine
HP TestedUntested
Handguard15 in Radical M-LOK FCR Rail
MPI TestedTested
Muzzle DeviceRadical Firearms Zero Impulse Muzzle Brake
Receiver Material7075-T6 Aluminum
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

6 reviews

  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 1 star
  • 0 reviews

It's running fine!


This kit is a great value with the upgraded stock, slim mlok rail, and brake. It's been running good so far no issues ~300+rds. I did add a heavy hammer spring (from brownells) and use RZE multi mags.

Best AR 7.62x39 build kit. Radical Firearms is AMAZING!

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This is the best pre built AR 7.62x39 conversion rifle you can buy for less than $500. It has NO light primer strikes and feeds perfectly with any mags (I'm using ASC and D&H Tactical mags) if your mag doesn't feed smoothly, put some clp on the follower and spring. Be AMAZED as it eats steel cased (Tulammo, Red Army Standard) all day long. Only time it wouldnt fire was when I came across a dud. (I re-fired it 3 times and nothing, so it was a dud) I am in love with this rifle. I wanted a MK-47 but they're to expensive. This is (w/o being able to use AK mags) like a Windham Weaponry in the AR firing 7.62x39 talent show!

Not worth the aggravation

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Very disappointed in this purchase (my first from Primary Arms, perhaps my last). The upper arrived looking like it was assembled by a group of blind chimpanzees (scratched, loose handguard, and poorly installed gas block). The LPK was total crap as well, utterly useless -- doubt it is actually milspec -- and missing parts (two detents, disconnector spring, and takedown spring). Minimalist stock so badly misshaped that would not fit on buffer tube.
<br>On the positive side, after reassembling, replacing bad/missing parts, polishing feed ramps, changing out BCG, etc., it performs adequately. It just cost more (both in $$ and time) then it was worth.
<br>From PA: We're sorry that you had this issue, but glad to see that you're up and running. Please let us know if you ever have an issue with a product you purchase from us. We'll be happy to take care of it for you.

Perfect Infidel

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Upon opening the quality is just amazing for what I spent. No rattles or clanks from the upper. After assembling there are no noises or freeplay from the lower and upper. Really solid.
<br>Firing the weapon is AWESOME. I did switch the Muzzle Brake tho to a JP Enterprise Large Brake for .308s. ( no muzzle rise or sway ) I would love to post pics on here but I cant. So I left it to Twitter @random6uy.
<br>Primaryarms.com has OUTSTANDING service. They have my business.

Very happy customer!!!


Just finished putting it together with my stripped lower. Every went together perfect. All of the parts looks nice and packaged good. I received it very quickly. I will definitely by from them again.

I'm glad I bought this


I have had this upper since June 2018, it has not failed once. This upper sits on an Aero lower with magpul furniture with a Strike Industries 17-7 flatware spring and an Expo H3 buffer. Being skeptical, I started with a Simmons 3-9x50 optic, then a Nikon 3-9x40 Prostaff and now an ATN 4K Pro 5-20. I am pleased to say the this rifle is a tac driver whether its Winchesters Hog round, Hornady SSTs or even Tulammo. Hey PA, if I could upload photos?????