Radical Firearms AR-15 16" 5.56 Carbine - 15" M-LOK RPR Rail

Manufactured by Radical Firearms
SKU: FR16-5.56SOC-15RPR
MPN: FR16-5.56SOC-15RPR
Manufactured by Radical Firearms
13 Reviews

In Stock

Standard orders will be shipped within the same business day. FFL orders will ship within 2 business days or less as long as we have the information for the transfer destination. Priority shipping methods like Overnight Delivery, Air Delivery, 2nd Day Delivery, or 3 Day delivery do not include Saturday or Sunday as delivery days.

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



The Radical Firearms 16" 5.56 NATO SOCOM Rifle is law enforcement grade hardware. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC rifle is an outstanding choice for any budget. Just add your favorite iron sights or optic, then head for the range!

  • 16" 4140 chrome moly vanadium steel SOCOM barrel
  • Chambered in 5.56 NATO with a 1:7 twist rate
  • M16 cut bolt carrier group with Melonite finish
  • BCG high pressure tested and magnetic particle inspected
  • Standard charging handle
  • MIL-SPEC single stage trigger
  • 1/2x28 A2 flash hider
  • 15" Radical Firearms M-LOK RPR rail
  • Gen 3 rail mounting system
  • B5 Carbine Stock and pistol grip
  • Made in the U.S.A. in Stafford, Texas!

The Radical Firearms RPR 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.
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Barrel CoatingMelonite
Barrel ContourSOCOM
Barrel Length16
Barrel LiningMelonite
Barrel Material4140 Chrome Moly Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in Radical M-LOK RPR Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

Ratings & Reviews

13 reviews

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Incredible Value


Hard to beat this rifle for the money. It’s my first AR platform and I have no regrets. Lifetime warranty from Radical, and manufactured just down the road from PA.

First AR


This was my first AR-15. Shipping was fast considering the amount of firearms being purchased right now so thanks Primary Arms for their great work. Took it to the range today just to test it out. Ran about 150 rounds of Hornady frontier ammunition through it. It ate it up no FTF or FTE ran great. Can’t wait to put more ammunition down range with this. For the price it’s a great gun and a good place to start if you are looking to purchase your first AR-15.

First AR - Happy Experience

by -

This is my first AR 15 type rifle and I am immensely satisfied. I've run about 200 rounds through it so far, with no failures. And I paid nearly $150 less than a local brick and mortar shop! I would buy another Radical Firearms rifle or pistol with confidence and have recommended the rifle and Primary Arms to my friends.

First ever gun!


So, for my first ever firearm I purchased this. For the price and the quality there was no other choice. It's an incredibly well built, solid choice for a first time buyer of firearms. I was so happy when I saw this came in. I ended up even getting 3 more 30 round mags to go with this. I have yet to have a chance to shoot it, but as soon as I am able to I will probably edit this review if possible. I love how this feels in the hand, it's comfortable and not too heavy. It comes with a 30 round mag so that's a plus, but there are no sights on it at all, I bought some extra iron-sights and a red dot optic as well and I cannot wait to test them out.



Love it shoots great and Texas made



This is my first AR-15 IT'S Awesome shot 90 rounds of ammunition through this Radical AR-15 with no Issues, I was very happy with my perches and it was worth the wait, Hands down to the shipping Department they were Great. I would definitely recommend this Radical firearm a 10 Star rating.

RADICAL FIREARMS and primaryarms both great co


Have complete rifle two uppers all great would buy again.

Great deal


For the price of this gun especially at this time you cannot beat it.well made gun Has a great b5 grip all you need is a sight and your ready to go.



Solid! Everything about the gun is great. I always change the gun around to fit me and upgrades too. Buy amazing peice and quality

Great rifle! Grab this bad boy!!

by -

What can I say....your getting a $900 rifle at a great price. Just got mine coue weeks ago!! Ton's of Real estate on the M-lok. I enjoy this rifle!!