The Magpul Polymer M-LOK Cantilever Rail/Light Mount (MAG587-BLK) is a lightweight, low-profile mounting solution designed to position weapon lights and rail-mounted accessories in an optimal forward location on M-LOK handguards. Engineered for modern rifle platforms, this mount adds a compact MIL-STD-1913 Picatinny rail section that extends forward of the mounting slot, improving ergonomics, activation access, and overall weapon handling.

Constructed from reinforced polymer, the MAG587-BLK offers an excellent balance of strength, durability, and weight savings compared to traditional aluminum rail sections. The cantilevered design allows lights and accessories to be positioned further forward without increasing bulk along the handguard, making it ideal for defensive carbines, duty rifles, and lightweight builds.

Magpul’s proven M-LOK interface ensures a secure, repeatable lockup using cammed T-nuts and recoil mitigation lugs, while beveled edges and a snag-resistant profile help prevent interference with gear, slings, or barricade use. The result is a streamlined mounting solution that maintains a clean rail footprint while delivering reliable accessory placement where it matters most.

Made in the USA and purpose-built for M-LOK compatible handguards, the Magpul Cantilever Rail/Light Mount is a trusted upgrade for shooters seeking a rugged, minimalist platform for weapon lights and compact rail accessories without unnecessary weight or complexity.