I have a km3 that I'd like to make relevant. The body, mount, head, and remote switch all work, but at 150 lumens it is literally the weakest light i have, save for a couple AAA pocket lights. I know lumens aren't the be all end all of lights, but i am curious if there are any other heads that fit the body that would qualify as an upgrade. I don't have any need for the IR function btw.