I KNEW this was gonna happen, Walmart had the 4D mag on sale for $16 and I almost bought two for moding, but I was not sure if the 4 cells was a bad idea as I see mostly 3 cells getting modded, so now I will begin the endevour of building my own monster m@g light, with the help of this forum of course as I have absolutely no idea what I am doing...Thanks Modamag for the quick response.