BenChiew
Flashlight Enthusiast
Ben, the picture posted by Norm above shows that you were right in our conversation the other day about the MDC - you mentioned that both AA and 123 variants have similar markings. Your quote of Gene's explanation of how the two heads work is further enlightening, thanks!
Just wondering aloud, why doesn't Gene mark the heads differently (i.e. 'MDC AA' and 'MDC 123') to allow differentiation between them? I can imagine the dilemma a Malkoff Devices collector/hoarder will have, when he finds that he's mixed up the heads on his table of Malkoff parts and can't identify which one is the 123 head and which one is the AA head that will take li-ions!
Either you mark it yourself if you have both or test both on a AA tube. I would imagine that the CR123 version may not light up and even if it does, it will be really dim.