A rapid-fire weapon has a barrel with a projectile insertable into the barrel, which comprises several sub-projectiles disposed one behind the other in the longitudinal direction of the barrel and supporting each other. A propellant charge and an ignition means are provided behind each sub-projectile for the sequential ignition of the propellant charges so that the sub-projectiles are successively ejected from the barrel. The sub-projectiles (4) are firmly connected with each other in the area of the propellant charges (6, 6') in each case by means of a mechanical connection and the connections have in each case at least one rated break point (7, 7') which is broken in a defined fashion after the ignition of the respective propellant by the pressure of the propellant gases.