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

Manufactured by Radical Firearms
Manufactured by Radical Firearms
4 Reviews

In Stock

NOTE: Limit 2 per household. Quantities exceeding 2 will not allow checkout.

Standard orders received before 4:00pm CST will ship out the same day. FFL orders will ship within 3 business days as long as we have the information for the transfer destination.



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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WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

4 reviews


Great so far

by -

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.

As expected

by -

It fit the included barrel nut perfectly, oiled it for removal to adjust the gas block and reinstalled a couple of times. The screws were fine as I made sure the hex wrench was fully inserted. Would buy Radical again. The black finish is flawless and length is good for the 11.5" barrel.