Everyone who loves the baby-boy-blue paint-splash missile that comes with BIS Rodimus, raise their hands. Cyclonus better watch out or Rodimus will paint him blue! Well I don't, so I got rid of it. This was way trickier than I thought, mostly due to my lack of experience and lack of awesome perfect little parts. First of all, the nozzle is glued on. Had to pry at it with pliers and wedging an Exacto knife in the groove to loosen it. Once I had it apart, I came up with this beauty of a highly detailed and precise schematic: I epoxied in a blue 5mm LED in the nozzle, powered by three tiny hearing-aid batteries, (which I wanted to be replaceable so I just shoved 'em in a little heat-shrink tubing to hold them in) and I used a small-ish switch that came on some little light-up thing that I gutted. I also epoxied in the switch, and after soldering, coated all the connections in liquid electrical tape. Love that stuff. Cut the spring that came with the gun to a smaller size to fit in as a holder for the batteries. Epoxied that to the front of the switch to mount it. I wanted to use the existing orange trigger as the switch somehow to keep the factory look as close as possible with no extra buttons or switches visible. So I cut the orange trigger apart to mate up to the switch, glued the orange fin part onto the black switch button, and glued the long orange part back onto the barrel. I cut a diagonal section out for switch movement and for looks, so there wouldn't be this glaring obvious gap. Anyone who's paying that much attention to a tiny gap is crazy, but to me it looks egregious. Anyone who's still reading at this point has about the same respect for tricky mods as I do. I'm always marveled and baffled by LED mod threads on here, the threads are usually "LOOK at my LED headlights!" and its generally a big magical mystery to me how it was done. So I just thought I'd go a little more in-depth with my thoughts here. Anyway, this is what I came up with. (Please forgive my crap cam-phone pics.) Thanks to all the LED modders, all of whom continue to inspire me!