The Magpul MAG589-BLK M-LOK 3-Slot Polymer Rail is a lightweight, cost-effective way to expand your rifle's accessory real estate. This 1.6-inch rail section mounts directly to any M-LOK compatible handguard or forend—aluminum or polymer—and accepts standard 1913 Picatinny-spec rail-mounted gear like weapon lights, vertical grips, and other tactical attachments. If you're building or upgrading an AR platform rifle and need to add accessories without the weight and expense of a full-length rail system, this is a no-fuss solution.

Built from Magpul's proprietary reinforced composite polymer, the rail delivers real durability without unnecessary heft. The design includes recoil and impact mitigation lugs to absorb stress where it counts, and beveled edges throughout eliminate sharp corners and snagging hazards. All mounting hardware is included—just align it with your M-LOK slots and tighten down. It's the kind of small-footprint accessory that makes sense when you need a light or grip in just one spot, not a full ladder system.

Made in the USA and designed by shooters who understand how AR handguards actually get used, this rail section is a straightforward upgrade for hunters, tactical shooters, and anyone running an M-LOK equipped rifle who wants reliable, low-profile accessory mounting.

Key Features

• Direct M-LOK mounting—works with all M-LOK compatible handguards and forends
• Accepts standard 1913 Picatinny-spec rail-mounted accessories
• Lightweight reinforced polymer construction
• Recoil and impact mitigation lugs for durability
• Beveled edges reduce snagging and sharp corners
• All necessary hardware included for immediate installation
• Made in the USA

Specifications

Product Name	Magpul MAG589-BLK M-LOK 3-Slot Polymer Rail
Brand	Magpul
Color	Black
Rail Slots	3
Overall Length	1.6 inches
Material	Reinforced polymer composite
Mounting Standard	M-LOK
Accessory Compatibility	1913 Picatinny-spec rail-mounted accessories
Made in	USA

Frequently Asked Questions

Will this M-LOK rail work with my handguard?

Yes, the MAG589-BLK mounts directly to any M-LOK compatible handguard or forend, whether aluminum or polymer. All necessary mounting hardware is included.

What accessories can I attach to this rail?

This rail accepts any standard 1913 Picatinny-spec rail-mounted accessory, including weapon lights, vertical grips, laser modules, and similar tactical gear.

Is hardware included?

Yes. All hardware required to attach the rail directly to M-LOK slots is included in the package—no separate purchase necessary.

How much does this rail weigh?

The rail is manufactured from lightweight reinforced polymer, but specific weight is not provided. Contact us for exact specifications if weight is critical to your setup.