Replace the SureFire Scout Light’s rear push-button cap assembly with this cap in order to attach a SureFire tape switch. A lock-out feature positively prevents activation during tactical operations, transportation, or storage. Aerospace grade aluminum construction, MilSpec Type III hard-anodized in Black or Desert Tan For use with a SureFire tape switch Lock-out feature prevents accidental activation during transport or storage Fits: Scout Light Weapon Lights; Flashlights with .75" diameter switch, including, E1E-HA, E1B, E1L-HA-WH, E2D-BK, E2DL-BK, E2L-HA-WH, L4-HA-WH Mfg: Surefire