shooting sentry gun from Team Fortress 2
Making shooting sentry gun from Team Fortress 2 on the base of magnetic valve which is used in the pneumohooter. A gearbox will be also used, it will open the valve after a definite period of time. Balls supply in the barrel is carried out by a system of tubes which are united between themselves. It is set in the motion by the same gearbox. Enjoy the viewing!