Designed to be compatible with the innovative MASTERFIRE Rapid Deploy Holster, the SureFire XH50G LED Weaponlight emits a powerful 850-lumen beam with ample spill and is equipped with a green aiming laser for confident targeting. The laser emitter is positioned above the light bezel, close to the bore of the weapon, to minimize offset between point of aim and point of impact. The laser can be zeroed and locking screws preserve the elevation and windage settings. A specially engineered bezel with cam slots and pin slots locks the light into the holster at a natural and comfortable angle for a fast, easy draw. Easy-to-reach ambidextrous switches control the light on a momentary or constant-on basis, with your choice of light-only, laser-only, or light and laser together modes. Two CR123A lithium-ion batteries will power the light for one hour and the laser for up to 24 hours. The hard-anodized, gasket-sealed aluminum housing mounts easily onto pistol rails by means of a T-slot thumbscrew mount.