The Wilcox Universal Control Grip with Wire and Tailcap for SureFire WeaponLights is an all-aluminum; powered vertical grip that features a patented mounting interface which allows for quick attachment to the MIL-STD-1913 rail includes wires and tailcap needed for use with either the SureFire Millennium or ScoutLight Series of Tactical Lights. An integrated electronic design eliminates pressure switches that often interfere with operation. Ergonomically positioned activation buttons located on the left and right side allow for control of the flashlight without losing your grip. The operator can choose between momentary or constant on with a single or double tap of the switch