Surefire UE-TN Waterproof Scout Light Rear Cap - Replacing your Scout Light's rear push-button cap assembly with this cap allow you to attach a SureFire tape switch for even greater versatility. The cap's lock-out feature positively prevents activation during tactical operations, transportation, or storage. Made from aerospace aluminum, Mil-Spec Type III hard-anodized and available in Black or Desert Tan, it's a worthy upgrade for your Scout Light. Fits Scout Light WeaponLights & flashlights with .75in diameter switch, including E1E-HA, E1B, E1L-HA-WH, E2D-BK, E2DL-BK, E2L-HA-WH and L4-HA-WH (not compatible with Micro Scout Light Pro) Lock-out feature prevents accidental activation during transport or storage Replacement rear cap assembly for Scout Lights Does not include ST07 tape switch