Surefire M640U 6-Volt Ultra-High-Output Led Scout Light® Pro w/ Z68 Tailcap 1000 LumensThe Surefire M640U 6 Volt Ultra High Output Led Scout Light 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,