As in most DA/SA pistols, the trigger moves halfway back when the hammer is cock, or when the slide moves back to eject, cycle the next round, and pushes the hammer in cock/SA position.
The P64 for some reason, was not designed this way, though it has a light pull, the trigger is all the way forward, just as how it is on DA mode.
Since this is a close copy of the PPK, which has a trigger that moves back when on SA mode, I wonder if anyone here has tried modding the P64 to also have a short trigger reset on SA?