pretty much tit for tat huh? I am trying to decide wether or not to get an M3 or buy another C3 and keep my KT2 on one with the MN16 in it. I am currently using my C3 which I have bored out and added a A19 to use 18650s and an MN21. That is a killer little setup but will only last about 10 minutes continous.