Just tonight I received and upgraded my M500 (M3 head) with a Malkov MD10 dropin. What an awesome option!. For some reason that particular combo just screams with the upgraded lumens and runtime. I can't believe that I didn't do this years ago. It's almost the ideal hotspot and spill and good out past 100 yards now with a really nice tint. I think the incandescents are almost a little too warm.
I am really excited about doing my M3 light tomorrow night with the second MD10. I may even start EDCing it again.
It's like they're brand new Surefire lights!
I sure hope this doesn't become addictive, I can now see why there are so many people into the whole P60 dropin thing...MUST RESIST... must resist.... .... click.