The Magpul M-LOK Cantilever Rail/Light Mount allows you to attach various Picatinny-compatible lights and optics with ease. The low-profile cantilevered design offers improved ergonomics and optimizes accessory positioning, while heavy-duty reinforced-polymer construction keeps weight to a minimum without forfeiting strength. Beveled ends and corners reduce snagging and sharp edges. Includes all installation hardware. Low-profile cantilevered design Heavy-duty reinforced-polymer construction Improves ergonomics and optimizes accessory positioning Beveled ends and corners for snag-free performance