Compatible with SureFire's X-Series Weaponlights, the DG-23 Grip Switch Assembly replaces the light's rear battery cap and provides a remote pressure switch to give you momentary-on control without having to move your hand from the handle. The pressure pad switch can be mounted to the handgun's frame just below the trigger guard and is controlled with your middle finger, allowing you to keep your trigger finger ready for use. Installation of the DG switch maintains the light's integrated dual toggle switches to maintain the stock constant-on and momentary activation capabilities.