Spring Guns Okay, so if you plan on modding your Nerf gun, you need to take it apart first, obviously. Following the gun is disassembled, you’re going to need to locate the plunger and plunger tube. The plunger could be the device that really pushes the air into the plunger tube, which feeds it for the dart and propels it forward. Next you have to have to come across the spring. The location will differ between reverse plunger and direct plunger guns. In direct plungers, the spring is located on the plunger tube. You should unscrew the plunger head to get to it. In reverse plungers, the spring is a lot less difficult to have to. It’s perfect behind the plunger. You also can know more essays here on Pressure Washer Sand Blaster.