Radical Firearms Gen 3 M-LOK Handguard – 15″ (Primary Arms Exclusive)

Price: $130.99

You’re looking at the handguard we recommend to customers who want a no-nonsense, rock-solid rail without the fancy price tag. This is the Radical Firearms Gen 3, made exclusively for Primary Arms. It’s built right in Stafford, Texas, with one job: to be a reliable foundation for your rifle.

We’ve handled plenty of these. The first thing you’ll notice is the profile. It’s slim and comfortable in the hand, which matters more after a long day at the range than on a spec sheet. It’s machined from a single piece of 6061-T6 aluminum and finished with a hardcoat anodizing that can take a beating. The full-length Picatinny top rail is seamless, so your optics mount solid without any gaps.

The real upgrade is in the Gen 3 mounting system. It uses a 4140 chromoly steel barrel nut and clamps down with serious force. Anti-rotation tabs lock into your mil-spec upper, keeping everything in line. This setup is stiff. When you’re loading up on a barricade or running a bipod, you won’t get that flex or shift you find with cheaper designs. It’s a secure platform, period.

With a 1.375” internal diameter, you’ve got room for most barrel profiles and your gas block. This 15-inch model will cleanly cover a rifle-length gas system. The M-LOK slots are cut cleanly on the 3, 6, and 9 o’clock positions, so mounting your grips, lights, or other gear is straightforward and secure.

Radical Firearms stands behind this with their lifetime warranty. If you own it, they’ll fix it. That’s a promise you don’t see every day.

Bottom Line: This is a professional-grade handguard for the shooter who values performance over hype. It’s simple, tough, and gets the job done. If you’re building a workhorse AR and want a Texas-made rail that won’t fail, this is it.

Key Features & Specs:

• Material: 6061-T6 Aluminum, Hardcoat Anodized Finish
• Length: 15 Inches (Covers Rifle-Length Gas Systems)
• Mounting: Gen 3 Clamp-On System with 4140 Steel Barrel Nut
• Top Rail: Full-Length, Seamless M1913 Picatinny
• Attachment: M-LOK Compatible (3, 6, 9 o’clock)
• Fit: Anti-Rotation Tabs for Mil-Spec Uppers, 1.375” Internal Diameter
• Warranty: Radical Firearms Lifetime Warranty
• Origin: Made in Stafford, Texas, USA