I bought one of those kits maybe ten years back when everyone was going LED, $100 buck for the whole kit in like new condition so I couldn't pass it up, that blue filter helped my nephew track down the blood trail on a poorly hit deer, and cost me $15 in batteries. My tailcap has the button and the plug-in, switch that came with it says Surefire on it though, does it need a different tailcap for this switch?