Xtreme Lumens Tactical Weapon-Mounted Long Gun LightSingle switch functionality Sharp focused beam for distance illumination LED technology The TWM 852XL Xtreme Lumens Tactical Weapon Mounted Long Gun Light uses a CREE LED rated 850 lumens for 1. 75 hours providing a beam distance of 245 meters. The rear facing, single switch provides both momentary and constant on lighting operation. Designed to securely attach to a long gun Picatinny rail, the IP X7 rated waterproof housing is constructed from