Radical Firearms 16" 300 BLK 1:8 Pistol Length HBAR Barreled Upper - 12" M-LOK FCR Gen3 Rail

Manufactured by Radical Firearms
SKU: FU16-300HBAR-12FCR3
Manufactured by Radical Firearms
1 Review

Out of Stock

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



The Radical Firearms 16" 300 BLK HBAR Barreled Upper Receiver 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. Complete this build with your favorite lower receiver, bolt carrier group, charging handle, 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: Does not include bolt carrier group or charging handle.

  • 16" 41V50 chrome moly vanadium steel HBAR barrel
  • Chambered in 300 BLK with a 1:8 twist rate
  • 5/8x24 A2 flash hider
  • 12" Radical Firearms M-LOK FCR rail
  • Gen 3 rail mounting system
  • Made in the U.S.A. in Stafford, Texas!
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AssemblyBarreled Assemblies
Barrel CoatingSalt Bath Nitride
Barrel ContourHBAR
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandRadical Firearms
Caliber Gauge300 Blackout
Gas System LengthPistol
Gas System TypeDirect Impingement
Handguard12 in Radical M-LOK FCR Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern5/8 X 24
Twist Rate1:8

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

1 review

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Great bang for the buck.

by -

I was looking around in my closet and found an old beat up 80 percent lower I milled out 4 or 5 years ago laying around so I figured I would build a cheap .300 for plinking and maybe a pig hunt or two. Saw this upper on sale and figured why not. I changed out the fire control on my lower with a rise armament drop in then slapped this upper to the lower with a Bushnell Trs-25 attached. All I can say is that this beater rifle has now taken the front spot in my safe, and heart. I have to admit I have as many rifles as a women has shoes, (is there ever really too many) but this is now my all time go to bang stick. This upper eats anything you feed it, super sonic or sub sonic. Loves being fed with .223/5.56 Hexmags and has yet to hiccup once with a ftf or fte. Short order here, just get one if you want some quality at a poor mans budget. Two huge thumbs up here.