The Midwest Industries M-LOK 3-slot rail section (Midwest Industries part no. MI-3MR) adds a short run of mil-spec 1913 Picatinny rail to any M-LOK-equipped handguard, letting a shooter place accessories exactly where they’re needed while leaving the rest of the handguard smooth. At just 4 inches long and 0.055 lb, it’s a minimal-footprint way to mount a light, sling swivel, or other Picatinny-pattern accessory without committing to a full-length rail. Midwest Industries is a proven leader in AR-platform parts, focused on made-in-the-USA components that improve on the factory rifle without adding unnecessary bulk. It attaches directly to standard M-LOK slots with the included hardware.

Key Specifications

• Adds 3 slots of Picatinny rail to any M-LOK handguard.
• Measures 4 inches in length.
• Weighs just 0.055 lb.
• Attaches directly to standard M-LOK slots using the included hardware.
• Picatinny surface accepts standard rail-mount accessories.
• Lets shooters place accessories exactly where needed while keeping the rest of the handguard smooth.
• Manufactured in the USA by Midwest Industries.
• Machined from aluminum for corrosion resistance and long-term durability.
• Low-profile design keeps the added rail section flush with the surrounding M-LOK slots.

Frequently Asked Questions

Does this fit any M-LOK handguard? Yes, it attaches to any standard M-LOK-equipped handguard.

How much rail does it add? Three slots of mil-spec Picatinny rail.

Is this made in the USA? Yes, Midwest Industries manufactures this rail section in the USA.

Buy the Midwest Industries M-LOK 3 Slot Rail Section

Add exactly the rail space you need, right where you need it. Order the Midwest Industries M-LOK rail section from our gun accessories lineup, and our Lubbock, Texas team can help confirm compatibility before it ships.