Replace your Scout Light's rear push-button cap assembly with this cap in order to attach a SureFire tape switch (not included) Aerospace grade aluminum construction, MilSpec Type III hard-anodized in Desert Tan Lock-out feature prevents accidental activation during transport or storage Waterproof o-ring sealed housing Will work with SureFire M Series Scoutlight WeaponLights (Tape Switch not included) Type: Replacement Part For the MX600 and MX620 series Scout lights Product Color: Tan 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.