The Dye Izon sight system is a great addition to most popular markers. For those of you who are all about one-shot one-kill, this sight is the answer. Just throw Izon your gun, dial it in and play. Put the red dot right on someones goggles and get ready to feel the satisfaction when you pull the trigger. With the Izon sight there are no batteries to drain, all you need is some sun on your gun and you're ready to one-shot just about anything that gets in your way.