RF Upper 16" 5.56 M4 Profile RF Round Rail: FGS 12" Rail
RF Upper 16"  5.56 M4 Profile RF Round Rail: FGS 12" Rail

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MSRP: $249.95

Stock Status:(Out of Stock)
Availability: Current Production Time Up To 4 Weeks
Product Code: FU16-5.56M4-12FGS

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

The Radical Firearms 16" M4 Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any MIL-STD 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, Barrel Nut. 16" M4 Profile Barrel and A2 Flash Hider. Our free-float handguard: Forward Guard Shield (FGS) keeps your hands cool and provides plenty of room for accessories. The FGS rail even has the capability to add attachments other than on the top picatinny rail, as it does allow Magpul Moe attachments and rail sections. Bolt Carrier Group and Charging Handle are additional and are offered at discounted prices in the drop down menus. (Unless otherwise stated)

  • 16” 4140 Chromoly Barrel With Melonite Coating
  • 5.56 M4 Profile
  • M4 Feed Ramps
  • 1:7 Twist Rate
  • A2 Flash Hider
  • 1/2x28 TPI
  • Low Profile Gas Block
  • Carbine Length Gas System
  • Radical Firearms Forged MIL-STD Upper Receiver
  • MIL-STD Upper Parts Kit
  • RF Dimpled Forward Assist
  • Radical Firearms 12” FGS
  • Attachment Slots accept either Magul MOE attachments, or our RF picatinny rail sections (FGS-A)
  • Made in Houston, Texas U.S.A.!

Average Rating: 5 of 5 Total Reviews: 6 Write a review »

  0 of 0 people found the following review helpful:
Love It October 25, 2016
Reviewer: Kevin Rougeau from Port Neches , TX United States  
Recieved it when promised and great people to deal with! I will be ordering another from them. Already been back to get a lower from them can't wait to start building my next one.


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  0 of 0 people found the following review helpful:
Fast Delivery, Fits Perfectly October 7, 2016
Reviewer: Tim from Virginia  
I've been looking for a quality upper to place on the first lower I built myself. I was looking for Nitride/Melonite, 1:7, 16" and something with great reviews from a variety of sources. I'm glad I came across Radical Firearms. Read everything I could about the company, and despite being a bit reluctant to order an upper that might take 8 weeks to be built and delivered, I was so impressed with all I had read I felt it would be worth the wait.

I ordered the upper just about a week ago and it's already delivered. Dropped it onto my lower and it fits better than many upper/lowers sold together. The true test of course will come at the range, but I'm very impressed with the quality workmanship, the good communications and speedy fulfillment.

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  0 of 0 people found the following review helpful:
Great upper September 10, 2016
Reviewer: Anthony Argomaniz from Los Angeles, CA United States  
For my first build, I choose RF. Because I heard nothing but great things. And they didn't disappoint. Great build quality, everything feels and looks nice and solid. I'm very satisfied with my upper. I will definitely return.

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  1 of 2 people found the following review helpful:
I'm very pleased! April 3, 2016
Reviewer: Thomas Martin from Steilacoom, WA United States  
Today is the first day I got to the range with this upper. I shot one of my tightest groups, ever with it and I wasn't even paying attention to trigger squeeze and breathing! I'm going to buy some expensive scope rings to do the barrel and the AR223 scope justice! I specifically got this upper to ping the metal targets at 300 meters. I can't believe the quality for the price.

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  5 of 5 people found the following review helpful:
Great upper November 27, 2015
Reviewer: Matt Saine from Ft. Worth, Texas  
The fit and finish is great in this upper. Have to say it's better than my PSA. Don't feel like it's cheap based on the price. Great job guys. Looking forward to buying more.

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