Replace your Scout Light's rear push-button cap assembly with this cap in order to attach a SureFire tape switch. Lock-out feature positively prevents activation during tactical operations, transportation, or storage. Made from aerospace aluminum, MilSpec Type III hard-anodized. Available in Black or Desert Tan. 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-WHFeatures :Aerospace grade aluminum constructionFor use with a SureFire tape switchLock-out feature prevents accidental activation