Midwest Industries Slim Line Free Float M-LOK Handguard for AR-15 - Aluminum Black

The Midwest Industries Slim Line Free Float M-LOK Handguard for AR-15 is a lightweight, modular rail system built for shooters who want accessory versatility without the bulk. Free-floating design isolates the barrel from the handguard to preserve accuracy, while the slim profile—just 1.5 inches in outside diameter—keeps your rifle nimble and fast-handling. Whether you're setting up a precision rifle, a tactical carbine, or an efficient hunting build, this aluminum handguard gives you the mounting flexibility modern shooters expect.

Three full sides of M-LOK slots let you mount lights, lasers, grips, and other gear exactly where you need them, while the Picatinny rail on top accepts optics, iron sights, or additional accessories without compromise. The handguard ships with everything required for installation: the barrel nut, Midwest Industries' patented 4140 heat-treated torque plate for repeatable indexing, and a dedicated installation wrench. Built from 6061 aluminum and hard-coat anodized for durability, the handguard is fully dehorned and deburred—no sharp edges catching your hand or pack. Made in the USA.

Available in five lengths (9.25", 10.5", 12.625", 14", and 15"), the Slim Line adapts to your AR configuration, from short-barreled rifles to longer precision builds. Two integral anti-rotation QD sling sockets mount directly to the handguard, keeping sling attachment points low-profile and rigid. Paired with an free-float barrel nut, this design minimizes harmonic interference and supports repeatable accuracy run after run.

Key Features

• Free-float design isolates barrel for improved accuracy potential
• Three sides of M-LOK for flexible accessory mounting
• MIL-STD 1913 Picatinny top rail for optics and sights
• Slim 1.5" outside diameter for quick, intuitive handling
• Patented 4140 heat-treated torque plate ensures consistent indexing
• Two integral anti-rotation QD sling sockets
• Fully dehorned and deburred for comfortable grip
• Includes barrel nut, torque plate, and installation wrench
• 6061 aluminum with Type 3 hard-coat anodize for corrosion resistance
• Made in the USA

Specifications

Frequently Asked Questions

What AR-15 handguard lengths are available?

The Midwest Industries Slim Line Free Float M-LOK Handguard comes in five lengths: 9.25", 10.5", 12.625", 14", and 15". Choose the length that best suits your barrel configuration and intended use.

What's included with the handguard?

This handguard ships complete with a 4140 heat-treated barrel nut, Midwest Industries' patented 4140 heat-treated torque plate, and an installation wrench. You have everything needed to install it on your AR-15.

What mounting options does this handguard have?

The handguard features three sides of M-LOK slots for accessories like lights, lasers, and grips, plus a MIL-STD 1913 Picatinny rail on top for optics and sights. It also includes two integral anti-rotation QD sling sockets.

Is this a free-float handguard?

Yes. The design isolates the barrel from the handguard, which can improve accuracy consistency by reducing harmonic interference from the barrel.