Anybody wanting the M-3 Tatical Light by Insight Technologies should check out:
www.lonewolfdist.com
They are in Idaho, and I ordered a spare bulb for my M-3 (just in case) and it arrived 2 days after I ordered it. NOW THAT IS FAST SERVICE!!! BTW, I love my M-3 on a Glock 21.
And yes, Lone Wolf Distributers have a picture of it on their web site.
Their price $149.99 includes shipping and handling. I bought mine locally for $134.95, but the dealer I bought it from couldnt get me a spare bulb, which is why I tried Lone Wolf. Ask for JR when you call. (unfortunately its not a toll free call)