Magpul Industries Rail Light Mount Polymer Fits M-LOK Cantilever MAG587. These versatile Flashlight Accessories from Magpul Industries feature 3 Picatinny slots for accessories. Beveled ends and corners keep surfaces smooth to avoid snagging and sharp edges with the Magpul Industries Rail Light Mount Platform. Designed to keep your overall weapon profile low the Magpul Industries Cantilever Rail Light Mount is a great little piece of gear. Specifications for Magpul Industries M-LOK Cantilever Rail/Light Mount: Overall Length: 3.15 Color: Black Package Contents: Magpul Industries M-LOK Cantilever Rail/Light Mount Magpul Industries MAG587: Rail Light Mount Polymer Fits M-LOK Cantilever