Back when I still used to play with the popular Hasbro Nerf blaster as a kid, I always wondered if it would be possible to somehow increase the range just slightly because the darts would often not quite be able to reach the targets that I wanted to hit. It was entirely irrelevant whether I was aiming at a chair or at my friends, if the dart would not be able to reach what I was aiming at in the first place. I remedied this in my early teen-years by completely taking apart the toy and soldering the wires connecting the battery pack and motors such that they would either increase the output voltage or use one or ideally two 9v batteries instead. When increasing the output voltage of the original battery pack of the Nerf gun, all that needed to be done was to have the batteries running in parallel instead of in series. The problem with this however was that most Nerf guns where already wired this way from the factory.