PURPOSE: To enable a continuous shooting of an air gun to be carried out by a method wherein air charges a bullet in a cylinder while rotating the cylinder and then the bullet is shooted from the shooting port with compressed air of high pressure.

CONSTITUTION: An air ejection passage 3 is formed in a pneumatic air bullet chamber (cylinder) 1. Air is fed from a shaft injection hole 2a of a shaft 2 fixed. Compressed air is ejected at an ejection port 4 to shoot a bullet. A turbine 9 from rotating a cylinder 8 is rotated in a specified direction with pneumatic pressure. In order to change a bullet automatically into a barrel 19, a loading piston 5 is pushed with air pressure. In this way, pneumatic pressure is applied for a loading, a rotation of the cylinder and a continuous shooting of bullet. An extreme end of a bullet head 10 is sphere in its shape, an air cushion chamber 10a is mounted in it. This is a piston structure in which a rear part is a cavity of a cylindrical form and its front part is closed. As air pressure is received in it, it is advanced forwardly, the extreme end of rubber and the cushion part properly dampen a shock so as to prevent their mate from being damaged.