Radical Firearms Gen 3 M-LOK AR-15 Handguard - Primary Arms Exclusive - 10"

Manufactured by Radical Firearms
Manufactured by Radical Firearms
24 Reviews

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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The Radical Firearms Primary Arms exclusive rail system is a lightweight and comfortably slim handguard ideal for shooters wanting to keep unnecessary ounces off their rifle build. Each rail is precision machined from high-strength 6061-T6 aluminum and features a tough hardcoat anodized finish. With a comfortable 1.375" internal diameter, seamless top-rail, and heavy duty 4140 steel barrel nut, this M-LOK compatible handguard is an excellent option for your next build.

  • 6061-T6 aluminum construction
  • 10" handguard will cover mid-length gas systems
  • Full length M1913 Picatinny Top Rail
  • Rigid design with 4140 steel barrel nut
  • M-LOK design compatible with your favorite accessories
  • 3rd generation mounting system
  • Made in Stafford, Texas!

The ergonomic freefloat Primary Arms exclusive handguard features a monolithic M1913 picatinny top rail for your favorite sights, optics, and accessories. Anti-rotation tabs interface with MIL-SPEC upper receivers to ensure optimal alignment of the top rail. The 3rd generation mounting system offers impressive rigidity to reduce deflection when bracing against barriers or shooting from a bipod, and clamps to a strong 4140 chromoly vanadium steel barrel nut.

Based out of Stafford, Texas, Radical Firearms got their start producing quality affordable firearms and accessories. With a wide selection of AR-15s in popular chamberings, they are certain to produce the rifle or AR pistol you’re looking for at a price you can afford. Best of all, Radical Firearms offers an exclusive lifetime warranty on all of their products as long as you own them!
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BrandRadical Firearms
FinishHardcoat Anodized
Handguard Length10
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

24 reviews


Great so far

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Im no internet ex special forces or youtube world class armourer, with only having put together and shot a few dozen AR rifles/pistols combined, my experience for comparison is limited. I also am a fan of value minded spending. This item is exactly 10" in length. The anodizing is a nice black and not a grayish-black. The color is uniform throughout. I did not weigh it prior to install. The barrel nut weighs 3.49 OZ. The identical 15" handguard from Radical weighs 10.55 OZ. My best guess is this one is around 7 OZ. All the machining is smooth. Theres no rough edges. The barrel nut does not require timing for the gas tube. Flats on the barrel nut measures 30mm. In addition to the two hex heads screws that clamp the hand guard on, there is also a type of hex head set screw on the bottom that goes into a groove around the barrel nut helping keep it in place. Between the 10" and 15" Radical PA exclusive hand guards on 2 different firearms, no complaints except no qd for a sling.

Great Quality

by -

Received the handguard today, installed it and I'm impressed with the feel and quality of the guards. I'm in the process of another build and wish that I bought two sets.


by -

Screws are cheap pot metal. Stripped immediately. Forearm doesn't sit level. Set screw underneath causes it to can't.

Money well worth it

by -

It's the easiest rail handguard to install. I like the engineering design and bolt on. Another build in the works hopefully looking forward to a future purchase again.

Great fit

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Building a AR pistol w/10.5 barrel for my wife. This handguard was the perfect fit.

Decent for a budget build, rigid and functional.

by -

Great price and service from PA, however the quality of the finish is subpar. There was a lot of burrs from the milling still on there, and they were anodized also. A lot of the burrs flaked off along with the finish, exposing the metal. But it does mount on solid and works as it’s intended.

Not too bad.

by -

Fit good with barrel nut. Finish is flat but uniform. Great for the money.

Good fit

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Glad I got this one when I did. The length and weight are perfect for the lightweight grab and go 16" rifle length upper I built earlier this year. Surprised to see how much prices have gone up since I got this in early March. My only complaint is that the circular cutouts feel a little sharp on the edges. I'm looking for some rail panels to get a more comfortable grip on the handgaurd.

Simple installation

by -

Low profile barrel nut iliminates gas tube timing. Seems well made


by -

all I can say is PRO2A