Description
The Midwest Industries Slimline 10.5" M-LOK Handguard is one of those upgrades that just makes an AR-15 feel better in the hands. It's a one-piece, free-float design cut from 6061 aluminum and finished in a Type III hard coat anodize, so it holds up to real use without adding bulk. With a 1.5" outside diameter and a 1.3" inside diameter, it stays genuinely slim, which matters if you like getting your support hand right up close to the barrel for better control.
What the Slimline 10.5" Handguard Brings to Your Build
Up top you get a continuous MIL-STD 1913 Picatinny rail, so mounting a sight, a light, or a laser stays simple and repeatable. M-LOK slots run along three sides plus additional flats, giving you plenty of real estate for accessories without a rail hanging off every surface. Two integral anti-rotation QD sling sockets are built right in, so you can run a sling without giving up a mounting spot. Installed weight lands right around 9 ounces, which keeps the front end light and fast-handling on a shorter build.
Why the Midwest Slimline Install Goes Smooth
Midwest didn't cut corners on the mounting hardware. It ships with a 4140 heat treated barrel nut, a patented 4140 heat treated torque plate, and the wrench you need to get it torqued down. The whole handguard is fully dehorned and deburred, so there are no sharp edges biting into your palm during a long range day. Folks who've run these tend to mention how solid the lockup feels once it's on the barrel nut, and that stiffness translates to a rail that won't shift on you.
This one is built for standard forged upper receivers and works great on a 10.5" setup, whether you're finishing a fresh pistol-length build or swapping out a dated drop-in guard. It's made in the USA and backed by Midwest's reputation for handguards that just work.
Key Specifications
- Manufacturer: Midwest Industries
- Manufacturer Part Number: MI-SLH10.5
- UPC: 812102031017
- Fits: AR-15 (standard forged upper receivers)
- Length: 10.5 inches
- Material: 6061 Aluminum
- Finish: Type III Hard Coat Anodized Black
- Mounting System: M-LOK (three sides)
- Top Rail: Continuous MIL-STD 1913 Picatinny
- Mount Type: Free Float, One-Piece
- Installed Weight: 9.0 oz
- Outside Diameter: 1.5 inches
- Inside Diameter: 1.3 inches
- QD Sling Sockets: Two integral anti-rotation
- Barrel Nut: 4140 Heat Treated
- Country of Origin: Made in USA
What’s Included
- Slimline 10.5" M-LOK handguard
- 4140 heat treated barrel nut
- 4140 heat treated torque plate
- Installation wrench
- 5-slot polymer M-LOK rail section
Frequently Asked Questions
Will the Slimline 10.5" handguard fit my AR-15?
It's designed for standard forged AR-15 upper receivers and installs with the included barrel nut and torque plate. If you're running a billet upper, dimensions vary between manufacturers, so it's worth checking with your upper maker to confirm fit before ordering.
Does this Midwest Industries handguard come with everything I need to install it?
Yes. It ships with the 4140 heat treated barrel nut, the patented torque plate, and the wrench needed to get it mounted. You'll also get a 5-slot polymer M-LOK rail section to start attaching accessories.
How does the M-LOK layout work on this Slimline handguard?
You get a full-length MIL-STD 1913 Picatinny rail across the top and M-LOK slots on three sides for lights, lasers, grips, and more. It also includes two integral QD sling sockets so you can run a sling without eating up a mounting spot.
How much does the Slimline 10.5" handguard weigh?
Installed weight comes in right around 9 ounces, which keeps the front end light on a shorter build. The slim 1.5-inch outside diameter also makes it easy to get a comfortable, close grip on the barrel.






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