The Magpul M-LOK Polymer Rail (brand part no. MAG593-BLK) is an 11-slot rail section that adds a true 1913 Picatinny-spec surface anywhere you need one on an M-LOK compatible hand guard or forend. It gives shooters a cost-effective way to mount lights, vertical grips, and other Picatinny-mounted accessories without buying a full-length rail or a new handguard. Magpul injection molds the rail from a proprietary reinforced composite, keeping it strong and durable while staying lightweight, and beveled ends reduce snagging and eliminate sharp corners. It works on both aluminum and polymer M-LOK hand guards and forends, and all mounting hardware is included.

Key Specifications

• Provides 11 M-LOK slots of mounting length in a single rail section.
• Adds a true 1913 Picatinny-spec rail surface to any M-LOK slot.
• Compatible with both aluminum and polymer M-LOK hand guards and forends.
• A cost-effective way to mount lights, vertical grips, and other Picatinny accessories.
• Injection molded from a proprietary reinforced composite.
• Built for enhanced strength and durability while staying lightweight.
• Beveled ends reduce snagging and eliminate sharp corners and edges.
• Ships with all mounting hardware included.
• Measures about 4.9 in. long.

Frequently Asked Questions

Will this work on a polymer hand guard? Yes — unlike some M-LOK accessories, this rail section is compatible with both aluminum and polymer M-LOK hand guards and forends.

What can I mount to it? Anything with a standard 1913 Picatinny interface, such as lights, vertical grips, and other rail-mounted accessories.

Is hardware included? Yes, all the hardware needed for attachment is included.

Buy the Magpul M-LOK Polymer Rail

Add a Picatinny mounting point exactly where you need one with the Magpul 11-Slot M-LOK Polymer Rail. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and browse more gun parts and accessories from the full Magpul Industries lineup we carry.