| 摘要 |
A projectile has a hollow casing (1, 2) with a perforated nose portion (11 ), a piston (3) disposed within the casing, and a markin g substance (4) disposed forwardly of the piston. The piston (3) is movable f orwardly under force applied to it by gas used to discha rge the projectile. The marking substance (4) is thereby compressed and expelled th rough the nose portion for contact with a target. |
