| 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 marking substance (4) disposed forwardly of the piston. The piston (3) is movable forwardly under force applied to it by gas used to discharge the projectile. The marking substance (4) is thereby compressed and expelled through the nose portion for contact with a target. |
