Pull the trigger.

Slide on the barrel, pull it towards you as much as possible and fix it in this position by lifting up the fuse on the side of the frame.

Insert the cartridge (cartridge should be inserted with the notch in the direction of the shot and with the flat side facing you).

Lower the fuse so that the slide rolls back to its original position.

To shoot, press the trigger a little down and towards yourself.

Kindly look at the video of the Slide Walther PPK Scale 1/3 Scale 1:3 in action