How do you make a knex gun?

To make a K'NEX gun, you'll need a variety of K'NEX pieces, including rods, connectors, and possibly some specific parts for the trigger and barrel. Start by designing a basic frame that holds the structure together, then create a barrel using longer rods. Add a trigger mechanism using connectors to allow the firing action, and finally, you can include rubber bands for propulsion. Always prioritize safety and use your K'NEX gun responsibly.