This mod for the Nerf Nite Finder is for anyone, even if you've never modified a dart gun before. This only goes about half as far as you can go with a Nite Finder, so also check other mods before saying, "I'm finished." All you need is a small Philips head screwdriver and the Nite Finder.
This step is simple but seems to take forever. Take the Nite Finder apart. Make sure you take the screws out slowly and carefully, because if one won't budge, it wrecks the whole process.
Now, with the gun apart, take out a little spring on the orange piece in the yellow box in the second picture.