UBH version differences?

ABTOMAT

Flashlight Enthusiast
Joined
Jan 9, 2004
Messages
2,951
Location
MA, USA
I hope this is the right forum, feel free to move the post. Can anyone explain to me the differences between the three different UBH production runs? I recall that some will work with some heads/switches and some won't.

I got what I believe is a UBH-II although I'm not positive. Just trying to figure out what I can and can't use.

Also, anyone know if the stock head-end O-rings were too large? My LU60A (E2C adapter) won't thread all the way on.
 
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