Radical Firearms Gen 3 M-LOK Handguard Primary Arms Exclusive - 7"

Manufactured by Radical Firearms
Manufactured by Radical Firearms
1 Review

In Stock

NOTE: Limit 3 per household. Quantities exceeding 3 will not allow checkout.

We are fully staffed and processing orders. Standard orders are shipping in approximately 1 business days or less. FFL orders take approximately 10 business days or less if you can provide us an actively receiving FFL location. Due to high demand, there is a limit of 5 FFL items in a 30 day period.



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
  • 7" handguard will cover pistol 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!
See More



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

1 review

  • 5 stars
  • 0 reviews
  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews

Don't Waste Your Money!

by -

First of all this is my first, and last purchase of anything from Radical firearms. This handguard doesn't even fit the barrel nut it ships with. I had to drive it out with a wooden dowel after removing all the bolts. Then after getting it installed, the bolts it ships with are so soft (and tiny, the hardware looks like it belongs on an RC care) that one of the heads stripped long before gettting it tight. Last but not least, clearance inside is not 1.375" as listed. On my digital calipers, it's averaging 1.34" all around. This will not let me run any M Lok accesorries and still be able to fit my can under the rail in a recessed location. I have $25 chinesium handguards that are light years better quality and hardware than this thing. 100% waste of time and money, but not PA's fault.