If anybody is looking for a host that holds 3 AAA batts, and is small and light, I may have found it for you. This has a tail clicky and s/b good for some builders who can do their own heat sink.
i tried using 1 of these before... took forever to take the LED board out... the only bad thing is that at the top... theres not a lip... so it wont hold anything easy... youd either have to glue it or press fit it
the clicky in the back is kinda cheap too... it wore out so fast
i just used the LEDs for something else.... thats about all i got out of mine... next best thing is scrap metal