I posted a couple weeks ago asking about one and I don't think anyone really knew where to find a cheap 2 123a light with a forward switch tailcap. To me this is the best combination to leave with a home defense handgun. A light push on the tail cap gives you a flash of light, full push and you can lock the light on and set it down somewhere. No multiple modes to go through, blinding light or nothing. http://www.shiningbeam.com/servlet/the-55/Romisen-RC-dsh-F4-CREE-Q5/Detail Ships from the US so it arrives fast, shipping was only a couple bucks. So far I'm happy and believe I got way more for my money with this light than a surefire g2. The body diameter is about .88 inches though so if you wanted to try using it on an ar in a 1" ring you'd need to wrap it first.