Things You'll Need
Instructions
How to Create a Paintball Gun at Home
Stick the point of one scissor blade into the bottom of the 20 oz. soda or water bottle and rotate bottle until hole is smooth. Make sure the hole is no bigger than the size of a dress shirt button.
Connect the hand pump to the bottom of the bottle. To make a better air seal, cover the hose with Teflon tape to fit perfectly in the hole. Cover the outside area with hot glue to make it air-tight.
Connect PVC tube into the top of the bottle about an inch down. PVC tubing must be 1/2 inches diameter and 2 inches in length. With the other side sticking out, connect the other end of the tube to the PVC valve.
Cover all of this with hot glue and electrical tape to make the marker sturdy and prevent any leaks.