Description
Luth-AR built the HG-LW15M Palm Handguard around one simple idea: your support hand should feel at home on the rifle. That triangular profile isn't just for looks. It fills the palm and gives you a natural, repeatable grip, whether you're running drills at the range or settling in behind a rest. The flat bottom lets you shoot off a bag or barricade without the rail rolling on you, which is a small detail that makes a real difference when you're trying to hold steady.
What Sets the Lightweight Palm Handguard Apart
This one is the trimmed-down version of Luth-AR's classic Palm Handguard. It tips the scale at right around 11.85 oz, noticeably lighter than the standard M-LOK model that runs closer to 13.7 oz. The weight comes off thanks to the vented cartridge-style cooling cuts along the lower sides, which also give the airflow somewhere to go so heat sheds faster during longer strings. It's machined from 6061-T6 aluminum extrusion and wears a hard-coat anodized black finish that shrugs off wear and holds up to rough handling.
Mounting Room on the HG-LW15M
Up top you get a full-length Picatinny rail at 15 inches (14 inches at the top rail thanks to the angle cut), so there's plenty of real estate for your optic, backup irons, or a night vision setup. For everything else, there are three rows of M-LOK slots: one on each side and one along the bottom. That bottom row is where a bipod lives happily, and the side slots handle lights, hand stops, or a sling mount. The free-float design keeps the tube off the barrel, so nothing you clamp to the rail messes with your accuracy.
Building With the Palm Handguard
The HG-LW15M drops onto a standard AR-15 upper receiver and ships with its own barrel nut made from heat-treated alloy steel with a manganese phosphate finish, plus the mounting hardware. It plays nicely with low-profile gas blocks, so if you're running a lightweight or mid-length gas system you've got the clearance you need. Total weight with the barrel nut lands around 14.9 oz, keeping the front end of your build light and quick to point.
Key Specifications
- Manufacturer: Luth-AR
- Manufacturer Part Number: HG-LW15M
- UPC: 812058032342
- Length: 15" (14" at top rail, angle cut)
- Height: 2"
- Weight: 11.85 oz (0.74 lbs)
- Total Weight With Barrel Nut: 14.9 oz (0.932 lbs)
- Material: 6061-T6 Aluminum Extrusion
- Finish: Black Hard-Coat Anodized
- Mounting System: M-LOK, 3 rows (both sides and bottom)
- Top Rail: Full-Length Picatinny
- Design: Free Float, Vented
- Fitment: Standard AR-15 Upper Receiver
- Barrel Nut: Heat-Treated Alloy Steel, Manganese Phosphate Finish
What’s Included
- Luth-AR HG-LW15M Lightweight Palm Handguard (15" M-LOK)
- Palm Handguard barrel nut (heat-treated alloy steel, manganese phosphate finish)
- Mounting hardware
Frequently Asked Questions
Does the Luth-AR HG-LW15M Palm Handguard come with a barrel nut?
Yes. It ships with Luth-AR's own barrel nut made from heat-treated alloy steel with a manganese phosphate finish, along with the mounting hardware. You'll still need standard armorer's tools to install it on your upper.
How many M-LOK slots does the HG-LW15M have?
It features three rows of M-LOK slots, one on each side and one along the bottom. The bottom row is ideal for a bipod, while the side slots handle lights, hand stops, or a sling mount. Up top you get a full-length Picatinny rail for optics and irons.
How is the Lightweight Palm Handguard different from the standard Palm Handguard?
The lightweight version trims the weight down to about 11.85 oz versus roughly 13.7 oz on the standard M-LOK model. It keeps the same signature triangular palm swell and free-float design, just with more aggressive cooling cuts and a flat bottom for shooting off a rest.
Will this handguard fit my AR-15?
The HG-LW15M is designed for standard AR-15 upper receivers and works with low-profile gas blocks. Because it's a 15-inch free-float rail, just make sure your gas block sits low enough to clear the tube and that your barrel length supports the full length.




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