Abstract: A self-loading pistol including a frame which has on its upper side a carriage guide extending in a longitudinal direction. The carriage guide at least partially receives and/or guides a carriage and a tube having a cartridge chamber. The tube is at least partially inside the carriage. The carriage can be moved in the carriage guide between front end and rear end positions. The carriage closes the tube in the front end position and opens the tube in at least the rear end position. The frame has a carriage catch lever to lock the carriage, a trigger device movable relative to the frame, and a handle piece having a magazine shaft. A receiving device receives the carriage at least partially in the rear end position. A shoulder support can be connected to the receiving device via a holding device.