Radical Firearms 5.56 SOCOM Complete AR-15 Upper - RPR M-LOK Handguard - 16"

Manufactured by Radical Firearms
SKU: CFU16-5.56SOC-15RPR
MPN: CFU16-5.56SOC-15RPR
Manufactured by Radical Firearms
14 Reviews
$359.99 $449.99

In Stock

NOTE: Limit 10 per household. Quantities exceeding 10 will not allow checkout.

Standard orders will ship out within 2 business days or less. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The Radical Firearms AR-15 upper receiver assembly comes ready out of the box to attach to any Mil-Spec lower receiver. It has a forged M4 railed upper, so you can easily attach scopes and red dot sights to the MIL-STD rail. The upper receiver includes the bolt carrier group, MIL-STD charging handle, ejection port cover, and forward assist. The barrel is 16" of 4140 Chromoly steel with a Melonite coating and is attached via a steel barrel nut. The barrel has a 1:7 twist, designed to stabilize heavier 556 NATO and 223 Remington ammo at intermediate ranges. This twist rate will still stabilize standard 55-grain FMJ ammo as well, so your range time won't be affected by not being able to find 62 grain Gold Dots. Attached to the heavy SOCOM profile barrel is an A2 flash hider. This complete upper receiver is an excellent addition to your AR-15 build.

  • 16" 4140 Chrome Moly barrel with Melonite coating
  • 5.56 SOCOM profile
  • M4 feed ramps
  • 1:7 twist rate
  • 1/2x28 TPI
  • Low profile gas block
  • A2 flash hider
  • Mid-length gas system
  • Radical Firearms Forged Mil-Spec upper receiver
  • RF forward assist
  • Radical Firearms 15" RPR handguard
  • Integrated M-LOK slots
  • Made in Houston, Texas U.S.A.
  • Included BCG and Charging Handle

Radical Firearms offers law enforcement grade hardware. Crafted with quality materials and covered by their lifetime warranty, Radical Firearms is an outstanding choice for any budget.
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AssemblyComplete Assemblies
Barrel Length16
BrandRadical Firearms
Caliber Gauge5.56 NATO
Handguard15 in Radical M-LOK RPR Rail
Muzzle DeviceA2 Flash Hider
Twist Rate1:7

Ratings & Reviews

14 reviews

  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Complete upper receiver

by -

GREAT deal. I haven't shot this yet but it allows me to add sites and grips for easy firing.

Great gun for the price

by -

Mounted on a PSA Lower and put a 3 MOA red dot sight and was getting 4 MOA groups at 100 yards. Great gun for the price.

Great craftsmanship

by -

It fits perfectly on my Ruger lower, the whole upper has smooth finishing.
<br>Strongly recommend.

Can’t beat it for the money

by -

Out of the box the fit and finish was great. Fit perfect on my 17Designs & Mfg lower. Can’t wait to get some range time on this baby! And as usual, the customer service help and fast shipping was greatly appreciated.

Great Upper at a Great Price!

by -

I put this upper on an AM-15 lower I built, threw some iron sights on it and headed to the range. I was hitting steel at 100 yds in no time. It ran flawlessly through the first 250 rds. The fit and finish are really good and the melonited barrel and bcg are an added bonus! I will definitely consider radical firearms in the future.

GREAT Upper and well worth the money.

by -

Loved the way it was assembled and looked streamline, solid, and aligned perfectly. i can't wait to bundle it with a lower and test fire it. I did price other sites and very disappointing with prices that were way higher and not any better. they also claimed they had product jut to tell you later it was 3-6 month wait. crazy i love Primary arms.

Nice upper

by -

This is a nice upper for the price. I had no issues and if fit nice.

Radical firearms complete upper

by -

Very pleased with this upper. Fits nice and snug on Anderson lower. No wobble. Haven't fired it yet so can't give 5 stars

Radical Arms 5.56 SOCOM Upper

by -

Very happy with finish, features and how well it mates with my Bushmaster lower.


by -

I just found out that I paid as much for the complete upper than Radical charges for a complete AR-15. Then, after purchasing one, PA advertises a sale where I could have gotten (2) for the price I paid for just one.