| 摘要 |
<p>A blank cartridge (1) comprises a cartridge casing (2) with a first primer (18); a piston (9) with a head (10) and an arm (11); and an expansion chamber located between said primer (18) and the head of the piston (10),- wherein, following detonation of the primer, the piston slidably displaces substantially within the casing (2) of said cartridge (1).</p> |
