Abstract: A housing section for a cartridge magazine for a portable firearm, the housing section including: a housing section shell including an inside shell surface, an outside shell surface, and an interior space which forms a first region and a second region; a housing section top side having a first opening cross section; a housing section bottom side having a second opening cross section; a first cross section forming the first region and being configured for accommodating a first number of rows of a plurality of cartridges arranged next to one another; and a second cross section forming the second region and being configured for accommodating a second number of rows of the plurality of cartridges arranged side-by-side, the second number and the first number differing from one another by at least one full numerical value, the first cross section being consistent with the first opening cross section.

Abstract: A self-loading shotgun includes a lock movable inside a lock housing between an open position and a closed position, a barrel, a magazine disposed below the barrel, a lock catch for holding the lock in the open position, and a feeder system for lifting a cartridge delivered from the magazine to the height of the barrel. The feeder system includes a feeder that swivels about a transverse axis and a magazine hatch that interacts with the lock catch. To allow the self-loading shotgun to be fully loaded even when the lock is open, the swivel movement of the feeder generated by the lock is controlled by a control element separate from the lock catch.

Abstract: A self-loading shotgun includes a lock movable inside a lock housing between an open position and a closed position, a barrel, a magazine disposed below the barrel, a lock catch for holding the lock in the open position, and a feeder system for lifting a cartridge delivered from the magazine to the height of the barrel. The feeder system includes a feeder that swivels about a transverse axis and a magazine hatch that interacts with the lock catch. To allow the self-loading shotgun to be fully loaded even when the lock is open, the swivel movement of the feeder generated by the lock is controlled by a control element separate from the lock catch.