Step 2: Grenade launcher shell
Disassemble the dollarama party popper and keep only the tube. You need to remove the bumps and line inside the tube. Mesure 8 lenght of toillet or sink pipe, cut them then glue them with the hot glue gun. Glue an electrical cap in the center at each end. Make a little lip so that the bbs don't fall in the launcher on one side of the shell.