I like to use the strobe function to blind intruders in my home. Even though I haven't had any lately
Surefire x400. If you want to see what you are shooting. Phlster ARC extended controls. If you want to control your light. Green laser if you don't want to get shot screwing around with your nods when your rifle runs dry.
too bad Insight went out of the civi light business they made really nice stuff.....