Radical Firearms AR Pistol 10.5" 5.56 NATO 1:7 Carbine Length - 10" Quad Rail

SKU: FP10.5-5.56M4-10FQR
MPN: FP10.5-5.56M4-10FQR
Manufactured by Radical Firearms


In Stock

"We ship fast!" Order by 4PM CST M-F or 11AM CST Saturday and your order ships same day. FFL items may take longer to process.


In Stock

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 can be 1-3 days.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.


AR-15 pistols are becoming extremely popular and this 5.56 AR pistol offered by Radical Firearms is one you shouldn’t overlook. It comes with everything you expect from Radical like Mil-Spec forged aluminum receivers assembled with Mil-Spec components and an ergonomic Mission First Tactical pistol grip. The M4 flat top upper receiver combined with the Radical Firearms FQR quad rail handguard is fully monolithic and are indexed together, so you don’t have to worry about alignment issues that can affect your zero with iron sights. The FQR rail features full length picatinny rails, so you can attach your favorite accessories at any position. This 10” quad rail almost covers the entire length of the 10.5” barrel, so you can attach a light as far forward as possible to prevent the light from getting obscured by the barrel or handguard. The barrel is made from 4140 chrome moly steel and has a durable Melonite finish that is harder than chrome while providing a lower coefficient of friction for a longer barrel life. The 1:7 twist barrel is very versatile and is optimal for stabilizing heavier 5.56 NATO rounds. The Radical Firearms complete 5.56 AR pistol is a great affordable option to add to your collection.

  • 10.5" 4140 chrome moly steel barrel with Melonite finish
  • 1:7 twist rate
  • 5.56 NATO chamber
  • M4 Feed Ramps
  • Pistol length gas-system
  • M16 BCG with Melonite coating
  • Radical Firearms 10" FQR quad rail handguard
  • Radical Firearms Forged Mil-Spec Lower Receiver
  • Mil-Spec Lower Parts Kit with Radical Firearms Dimpled Fire Control Group
  • A2 pistol grip
  • Pistol buffer assembly with padded cheek rest
  • Made in Texas

Just like the barrel, the M16 cut bolt carrier group is Melonite finished to prevent wear and provide an extremely smooth surface that is easy to clean. With a bolt and barrel extension sharing the same finish, you will see much less wear between the locking lugs and can expect a much longer lifespan of your components. The bolt head is magnetic particle inspected as well to ensure the dimensions are Mil-Spec for optimum reliability. The BCG is paired with a pistol length gas system and a pistol length buffer tube that features a padded cheek rest. This Radical Firearms AR pistol might just be the one you are looking for.

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.


Barrel Coating
Barrel ContourM4
Barrel Length10.5
Barrel LiningMelonite
Barrel Material4140 Chrome Moly Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard10 in Quad Rail
Twist Rate1:7

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