| 摘要 |
A pneumatic round of ammunition comprising of a body 1, sealed at both ends with valves 5 and 7, compartmentalised internally into two chambers by a piston 10 urged a forward 'sealed position' by the rear valve return spring 8. Both chambers being filled with, and being capable of holding an equal pressure of gas/air. When the rear valve 7 is dislodged upon firing, an in-balance in pressure is then created within the round and the piston is forcibly moved rearwards under the pressure of gas/air within the front chamber, thus opening the discharging passage 11 and releasing the gas/air charge held within, behind the projectile. The bush 9 allows gas to flow freely therethrough. |
