Looking for tailcap with clicky switch that fits Astrolux S42.

I want to convert my Astrolux S42 to a dual switch light so I can use it as a test platform for a new driver. To do that I need a tail-cap with a clicky switch that can fit on. Does anyone know for sure if there is a tail-cap from another light that legoes with the S42?

I’ve gone through the “what legoes with what” thread and didn’t find anything about the S42. The S41 appears to lego with a few lights though. Does anyone know if the S41 tail-cap fits on the S42?

Yes, the S41 tailcap can be used on S42. My Astrolux S42 has been modified this way.

My Astrolux S42.


Thanks! That means there are a couple of options. BLF A6, S41 and possibly some Ultrafire and generic 501’s and 502’s (maybe with a slight gap: What Legoes with What? - #105 by ImA4Wheelr )