INFORCE seemed to be set out to create a weapons light built to drop some weight and be ergonomic. They managed to do this in a compact package that is well thought out. Instead of creating a flashlight with a separate mount to strap on they decided to make the whole thing out of a polymer and have the mount molded right in. At first I was a bit skeptical of this small package but it has come to be one of my favorite lights.
The Petzl TACTIKKA XP is a multi brightness headlamp with several wide angle colors that can be popped in. This allows you to meet the lighting discipline of your mission while going hands free. The TACTIKKA headlamp runs on 3 AAA batteries with a max stated run time of 120 hours on low.