| 摘要 |
A gun for firing a projectile such as a dart under air pressure, comprises a breech 12 for the projectile, a barrel 10, a chamber 20 for compressed air, a reservoir 24, a trigger 30 for charging the chamber with pressurised air from the reservoir, a trigger 42 for firing the projectile, and a telescopic sight 18 incorporating a focussing element controllable by the pressure in the chamber 20. The pressure in the chamber 20 is lowerable to adjust the focusing element prior to firing by means of a bleed button 40. The correct firing pressure is achieved when the target is in focus, this being just sufficient for the dart to arrive at target with sufficient energy to penetrate an animal's hide without killing. <IMAGE> |
