The Combat Optic Tool by Patriot Products AZ is little piece of gear goodness that should be on every shooter’s key chain. Designed by Lt. Col (Ret) Freddie Blish, USMC, the Combat Optic Tool is small in size, light in weight, and limitless in application. At its core, it is a one-piece multi-tool. It has four immediately identifiable functions: Rounded Flathead Driver, Aimpoint Micro Series Adjuster, LaRue Tactical Tension Nut Wrench, and Bottle Opener. Obviously, it works like a charm for all of these applications. But, during our review, we were finding it useful to adjust all sorts of gear. We are sure that you will constantly find new ways to your Combat Optic Tool as well.