The Surefire M640U 6-Volt Ultra-High-Output Led Scout LightA(R) Pro is a high-performance weapon light that can deliver 1000 lumens of bright white light using its recoil-proof, ultra-high-output LED. Its TIR lens shapes the light into a far-reaching beam with ample peripheral vision for medium to longer-range applications. It also features a versatile Low-Profile Mount (LPM) that allows for the optimal positioning of the light relative to the rail, securely attaching to MIL-STD-1913 or M-LOK rails. The light can be easily activated through its push-button tailcap switch or pressure-activated tape switch on select models. The Scout Light Pro is made of lightweight aerospace aluminum with Mil-Spec Hard Anodized finish and O-ring seals to keep out moisture, making it rugged and reliable for combat use without sacrificing weapon maneuverability.