Abstract: A blowback-operated quick-firing weapon is to fire at a preselected rate of firing or at its inherent rate of firing if the latter rate is smaller than the former one. This is achieved by substantially all-electronic elements such as gates and flip-flops. To this end there is a signal transmitter signalling the closed position of the slider of said weapon. A first circuit means produces a firing current control impulse. A second circuit means responds to the movement of the slider away from and back to its closed position and produces a first control signal. A third circuit means is triggered by the firing current control pulse through a time-delay element. A logic circuit combines the first and second control signals to trigger a firing currrent control pulse. Further means are provided to automatically cause the firing of a charging cartridge, if the shot cartridge has not fired within a preselected safety interval after the firing current control pulse.