Magpul M-LOK Picatinny Cantilever Rail Section - Durable Black Polymer

The Magpul M-LOK Picatinny Cantilever Rail Section is a lightweight, polymer mounting solution that extends your M-LOK rail system forward to optimize accessory placement on modern combat rifles and modern sporting rifles. Built from reinforced polymer, this cantilever rail section mounts directly to any M-LOK compatible surface on handguards and forends—aluminum or polymer—and gives you Picatinny rail real estate where you need it most. If you're running lights, lasers, or other rail-mounted gear, this spacer keeps them positioned lower and further forward for better ergonomics and a lower overall profile than traditional mounting.

What makes this cantilever worth the addition: the rail extends 0.75" to 1.5" forward of the M-LOK mount point, giving you tactical flexibility to dial in exactly where your light or optic sits. The beveled corners and edges won't snag gear or your fingers, and the impact-mitigation lugs built into the polymer help manage recoil transmission. All mounting hardware is included—you don't need to hunt down M-LOK T-nuts or fasteners separately. The three MIL-STD-1913 slots accept standard Picatinny-spec accessories, and the design is compatible with popular Surefire Scout Light platforms (M300/M600 series) and Magpul's own Light Mount V-Block systems.

Made in the U.S.A., this rail section tips the scales lightly compared to aluminum alternatives, making it a smart choice if you're building a carbine or DMR where every ounce counts. Whether you're outfitting a competition gun, a hunting rifle with night-vision capability, or a duty rifle, this cantilever rail opens up mounting positions that a single run of M-LOK handguard can't always reach.

Key Features

• Direct M-LOK mounting—works with any M-LOK compatible handguard or forend
• Extends 0.75"–1.5" forward of mounting surface for optimized accessory position
• Three MIL-STD-1913 Picatinny slots for lights, lasers, and other rail-mounted gear
• Reinforced polymer construction—lightweight and durable
• Impact-mitigation lugs to help manage recoil forces
• Beveled edges and corners reduce snagging and snag points
• Keeps accessories low for a lower overall weapon profile
• All mounting hardware included
• Made in U.S.A.

Specifications

Frequently Asked Questions

Is this compatible with my M-LOK handguard or forend?

Yes, this cantilever rail section mounts directly to any M-LOK compatible surface on aluminum or polymer handguards and forends. All necessary hardware is included in the box.

What accessories can I mount on the Picatinny slots?

The three MIL-STD-1913 Picatinny slots accept any standard rail-mounted accessory including lights, lasers, and optics. It is directly compatible with Surefire M300 and M600 Scout Lights and works with Magpul's Light Mount V-Block and Rings.

How far does the rail extend forward?

The cantilever section extends 0.75" to 1.5" forward of the M-LOK mounting point, allowing you to position lights and accessories further out on the handguard for improved ergonomics and a lower weapon profile.

Does it come with all the hardware I need?

Yes, all hardware necessary for direct attachment to M-LOK slots is included. You don't need to source T-nuts or fasteners separately.