In this video I demonstrate my soda bottle airsoft machine gun made in a previous video with an upgraded compressed air power supply. Here is my first video showing how to build this particular model for use with hand power: https://youtu.be/tRoQVyRGoFA Thank you to my Patreon Supporters! Check out my page here: http://bit.ly/1TcfH4z -~-~~-~~~-~~-~- Check out my latest video: "How To View Invisible Air Currents With Lasers" https://www.youtube.com/watch?v=K94Cc21KEIA -~-~~-~~~-~~-~-