Thanks for the response. Maybe some other manufacturers have a couple; anyone have an exact diameter measurement?
Also, I've seen some hacks to add lenses (red, in particular); is there anything out there more factory-looking (not "hacky"?)
Thanks!
I'm just sad I'm now starting to learn about the 18650 "platform".
If I'd known then what I know now, I'd never have bought CR123 (16650) -based lights. What other goodies do people use as well (looking at the HC30, or H600)?
Also, what is magnetic charging ring; is that something more...