Radical Firearms 16" 5.56 Barrel Assembly 1:7 Mid-length - Gas Block - Gas Tube

Manufactured by Radical Firearms
6 Reviews



In Stock

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Radical Firearms produces quality precision made barrels perfect for your next build or replacing an old barrel. Machined from 4150 chrome moly vanadium steel and finished with a corrosion resistant salt bath nitride. This exceptionally durable barrel has a bore that is harder than traditional chrome lining without the accuracy robbing side effects. Chambered for the 5.56 NATO cartridge, with a button rifled 1:7 twist rate, this barrel will yield superior performance throughout the full range of .223/5.56mm ammunition, including the legendary 77-grain open tip match. This 5 56 barrel assembly includes a factory installed low profile set screw gas block, stainless steel mid-length gas tube, and is threaded for your 1/2x28 muzzle device to save you the headache of installing it yourself. This 16” barrel is a great option for your next budget build AR-15 carbine.

  • 16” barrel made from 4150 chrome moly steel
  • 1:7 twist rate for proper stabilization for a variety of bullet weights
  • ½x28 muzzle thread pitch for a variety of .223 Remington and 5.56x45mm NATO flash hiders and brakes
  • Mid-length gas system that combines reliability with recoil reduction
  • Salt bath nitride finish for corrosion resistance
  • M4 feed ramps cut in barrel extension for reliability
  • SOCOM barrel profile for accuracy
  • Includes low profile set screw gas block
  • Includes stainless steel gas tube

This 5.56 NATO barrel assembly is compatible with Mil-Spec AR-15 upper receivers and features the popular mid-length gas system. This gas system length is optimal for reliability as well as recoil reduction as it uses less gas over a longer period than a carbine length resulting in a recoil impulse that is much tamer. The barrel extension has M4 cut feed ramps to aid in reliability when chambering a variety of different rounds. The muzzle is threaded 1/2x28 for maximum compatibility with flash hiders, suppressors, muzzle brakes, and compensators. The SOCOM barrel profile is designed to help with accuracy as the thicker steel reduces the amount of barrel vibration resulting in a bullet that leaves the muzzle in a straighter path.

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 CoatingSalt Bath Nitride
Barrel ContourSOCOM
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material4150 Chrome Moly Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthMid-Length
ManufacturerRadical Firearms
Thread Pattern1/2 X 28
Twist Rate1:7

Ratings & Reviews

6 reviews


Wrong gas tube recieved

by -

They sent me a 10 inch gas tube instead of the mid length 13 inches

great buy


My first build and could not be more pleased. I matched the barrel with a Radical Firearms bolt and an Aero Precision upper and lower. For under $500 this gun shoots great. It has shot flawlessly for over 600 rounds

I'd buy another...


Bought this barrel a year ago and have about 1500 rounds through it now. It's installed on an Aero upper with a UTG free float handguard and DPMS Miculek brake. My Weaver 1.5-6x scope is zero'd at 25 yards and shoots 1.5" groups at 25 and 2-3" groups at 100. This last weekend I hit a 6" steel with 7 out of 8 rounds from 300 yards, elevated above target. At this point I'm pretty satisfied with the accuracy and I'd buy this again for another range or defense rifle. As for initial quality out of the box, machining looked good and finish was quality.

Buy a Ballistic Advantage.


This barrel has functioned. Only malfunction I've ever had was one stuck case (that was probably caused by ammo). I never did any formal accuracy testing, but standing at 100yd I was hitting all over a man sized target. Your money would be better spent on a Ballistic Advantage Barrel.

Great Buy.


Purchased this Barrel over a year ago got about 1,000 plus rounds through it and still shoots 1.5 at 100 yards i would not hesitate to get another.

Radical M4 Barrel


Great quality barrel. These barrels are made by ER Shaw so no complaints there. Also found out from Radical these are going to QPQ plating by the same manufacture who handles Remington and Mossberg.
<br>Installed easy on an Aero upper. Shot fine with decent groups for a $99 barrel. It is not a Noveske and I know it. I am not taking this rifle in to battle and don't need it to last over 5000 rounds. At this price I can replace it as needed.
<br>Great bang for buck.