| 摘要 |
PURPOSE:To shoot a bullet by a force of gas and a recovery force of a spring by compressing the spring by a pressure of the gas. CONSTITUTION:When gas is fed from a gas chamber 1 into a cylinder 2 through a gas shooting chamber feed valve 3, a trigger 5 is pulled to retreat a gun barrel 6 and a bullet 9 is shot by gas store din the cylinder 2 by a shooting valve 8, the bullet 9 is shot by a decrease in pressure in the cylinder 2 by a piston 7 together with a recovery force of the spring 4. |
