An exchange system for a handgun, comprising:
- a barrel for the handgun, the barrel defining and extending along a barrel bore axis extending in an x-direction, the barrel including:
- a rear end;
- a front end;
- an interior;
- a cartridge chamber, which is formed around the barrel bore axis in the interior and has a first diameter;
- a cartridge chamber opening, which is formed around the barrel bore axis in the interior, succeeds the cartridge chamber in a direction from the rear end to the front end, and has a second diameter;
- a conical transition region, which is formed around the barrel bore axis in the interior and immediately succeeds the cartridge chamber opening in the direction;
- a guide region, which has associated therewith a third diameter, the conical transition region transitioning from the second diameter to the third diameter which is associated with the guide region;
- a barrel opening, which is formed around the barrel bore axis in the interior and succeeds the conical transition region in the direction;
- and
- an end face formed around the cartridge chamber opening, the barrel being configured for a bullet driven by hot gases to accelerate therethrough, the cartridge chamber opening is designed in a plane which is substantially normal to the barrel bore axis, the end face extending in part in the plane and in part not in the plane, the conical transition region and the end face being connected to and shaped differently relative to one another;
- and
- a carrier sleeve configured to accommodate a cartridge, the carrier sleeve including a sleeve opening end face, the end face and the sleeve opening end face each being at least 1.5 times larger than a cross-sectional surface formed by the third diameter, the cartridge chamber being configured for receiving the carrier sleeve carrying the cartridge therein and for the carrier sleeve to be expelled from the cartridge chamber after the bullet is fired by the handgun.