8.5" 300 Blackout Upper with 7" FQR
8.5" 300 Blackout Upper with 7" FQR

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MSRP: $259.95

Stock Status:Ready to build; check lead times
Availability: Current Production Time Up To 4 Weeks
Product Code: FU8.5-300HBAR-7FQR


The Radical Firearms 8.5" Hbar profile 300 AAC Blackout 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 7" FQR 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: 814034024556
MFR#: RF00232

  • Barrel Length: 8.5"
  • 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: 1:7
  • 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: Quad Picatinny Rail
  • Handguard Length: 7"

Average Rating: 4.5 of 5 Total Reviews: 2 Write a review »

  0 of 0 people found the following review helpful:
Awesome Blackout upper! February 9, 2018
Reviewer: Casey Davis from Jennings, LA United States  
300 blackout I purchased really functions awesome. My only complaint was that the barrel nut was over tightened, to change the hand guard out. But I guess its better than it being loose. This is a great product and good quality I expected from deep south gunsmiths. Thanks Radical!!

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  2 of 2 people found the following review helpful:
0ne year review November 20, 2016
Reviewer: Martin Cheaney from TX  
I have had my Radical upper now for a year. I still am amazed at how good of a deal I lucked into. At the time, I didn't know anybody who had used Radicals' products. I am glad I did. My upper has shot everything I have fed it reliability. Both super and sub. Supressed or with a compensator. Amazing considering that I have uppers that cost me 3-4 times as much that will only work reliability with certain ammo, or not cycle at all without a can. The only reason I cant give 5 stars is that two of the screws that hold the forward grip were stripped when I recieved it. I put lock tight on them and have had no "play" at all; despite some pretty rough use. I did read a couple other reviews of other people getting simular problems with theirs. Hopefuly they have this improved this by now. I think that for this price, awesome! I don't think you can get a better upper.

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