the carrier 33 projecting downwards a connecting piece 34 which is bent inwards and which interacts with the connecting piece 14 of the trigger arm 4 the function of the trigger system according to the invention is explained below with reference to fig1 to 4 wherein in the top illustration of each figure the trigger arm 4 is shown completely and in the bottom illustration only the functional elements of the corresponding components are shown fig1 shows the trigger system in a partially pre cocked double action position in this position the catch stop 26 engages the catch 2 in the upper stop 24 of the hammer 1 whereby the hammer 1 is held in a position in which the force of the not shown mainspring would not yet be sufficient to fire a cartridge as follows from the lower left illustration of fig1 the hammer 1 can be activated by means of the lower trigger arm stop edge 18 interacting with the lower hammer stop 21 because the lower hammer stop 21 has a greater distance from the hammer pin 5 than the upper hammer stop 22 the hammer 1 can be activated from this position with lower trigger resistance the upper trigger arm stop edge 19 shown in the lower right illustration and the lower stop 25 of the hammer 1 are not functional in the partially pre cocked double action position by pulling the trigger 3 in the partially pre cocked double action position shown in fig1 the partially.