"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, Type III hard-anodized. 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."
Determined at checkout.