16" 300 Blackout Upper with 12" FGS
16" 300 Blackout Upper with 12" FGS

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MSRP: $309.95

Stock Status:(Out of Stock)
Availability: OUT OF STOCK
Product Code: FU16-300HBAR-12FGS

The Radical Firearms 16" HBAR profile 300BLK 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 12" FGS 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.

UPC: 814034024655
MFR#: RF00248

  • Barrel Length: 16"
  • Gas System: Pistol Length
  • Barrel Profile: HBAR Profile
  • Barrel Material: 4140 Chrome Moly Vanadium
  • Barrel Finish: Melonite
  • Muzzle Thread: 5/8x24
  • Chamber: 300BLK
  • Twist Rate: 1:8
  • 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: Magpul MOE Round Rail
  • Handguard Length: 12"
*The FGS rail is only compatible with FGS rail sections found under the PARTS section

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 24 Write a review »

  1 of 1 people found the following review helpful:
5 of 5 Perfect 2nd Upper April 11, 2022
Reviewer: Anonymous Person from Manitowoc, WI United States  
I was looking for a second upper assembly for my PSA lower, something bigger than the .223 Wylde for hunting whitetail.  Frankly, I was cautious due to the unbelievable price for the 300 BLK.  After checking out the reviews, and calling RF to answer a couple of my questions (great customer service), I ordered.  The upper arrived in less than 2 weeks in great packaging.  I pinned it with no issues with a decent fit.  My standard PSA BCG and CH fit right in.
I mounted a cheap Bushnell I had laying around, after buying a 3/4" riser block.  Walmart had cheap Rem UMC 120gr, so I bought a couple boxes.  After a quick swab with a bore snake, I ran a few rounds to dial in the scope...everything worked flawlessly.  Once sighted in, I was EXTREMELY pleased with the accuracy and grouping.  I wish I found this upper before buying the Bear Creek Armory .223 for $100 more...damn!
Excellent upper at a better price!  Recommending Radical Firearms to all AR enthusiasts.

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  0 of 0 people found the following review helpful:
5 of 5 Perfect April 11, 2022
Reviewer: David from Frankfort, KY United States  
Read many comments all over the place that 16" barrels with pistol gas system were extra dead weight or could even hinder performance. Rolled the dice, and was not shocked to find it arrived in perfect condition just as the other item I had previously ordered had. Fit and finish were spot on. Some say these aren't "true mil-spec" and if that makes them sleep better for paying absurd markups, so be it. Measure it yourself if you purchase. Same dimensions, same materials and assembly, same finish. Durability hasn't been an issue for the 5.56 upper and I doubt the .300 will be any different. Paired with a Rock River lower and Vortex Spitfire 1x. Added an AFG to the free float rail and off to the range. On target immediately and stayed there throughout the day. 600 rounds later it is still dead nuts on at 50-100 (my range limitation) and has cycled every type of ammo available. I tried each one. Remington supersonic 120 OTFB works best.

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  1 of 1 people found the following review helpful:
5 of 5 Great upper for Plinking, Target, or hunting. May 10, 2017
Reviewer: david wong from garden grove , CA United States  
bought this about a year ago and has put about 500 rounds through it and it works very well.  at 50 yards I'm hitting groups .5 inch big drilling my rounds through the hole time after time.  this upper i set up as a plinker and my Semi Auto hunting rifle and i have already harvested a couple of deer with it.  only thing i have to say is the hand guard is a little big but can change it easily.  over all great upper and will look into buying another upper either another 300 black out or a 5.56 upper.

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  1 of 1 people found the following review helpful:
5 of 5 bad ass May 3, 2017
Reviewer: Anonymous Person from United States  
Fits great, looks great shoota great. Can't wait tobuy again.

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  1 of 1 people found the following review helpful:
5 of 5 Incredible Deal April 20, 2017
Reviewer: jonjon896 from Kansas City, KS  
Great product and solid customer service from James and Stephanie from Radical!

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