US12510315 - Firearm
The invention relates to a firearm comprising: a housing ( 1 ) having a receptacle ( 2 ) for several cartridges or for a magazine with cartridges; a barrel unit ( 3 ) which is located in the housing ( 1 ) and has a barrel ( 4 ) and a cartridge chamber ( 6 ); a breechblock ( 8 ), which can be moved relative to the housing ( 1 ) and is biased in the firing direction by means of a return spring ( 7 ), for conveying cartridges into the cartridge chamber ( 6 ) or cartridge cases to an ejection port; and a gas braking device which is located in the housing ( 1 ) and comprises a cylinder ( 9 ) which is positioned parallel to the barrel ( 4 ) and which is connected to the interior of the barrel ( 4 ) via a gas extraction opening ( 10 ); and a piston ( 11 ) which can be moved inside the cylinder ( 9 ) and which is coupled to the breechblock ( 8 ). The breechblock ( 8 ) is located in a breechblock carrier unit ( 12 ) which is located completely inside the housing ( 1 ) over the entire movement path while a shot is being fired and during a reloading operation, the breechblock carrier unit ( 12 ) comprising the breechblock ( 8 ) itself, two connecting sections ( 13 ) guided parallel to the barrel ( 8 ) in the housing ( 1 ), and a coupling section ( 14 ) to be coupled with the piston ( 11 ) of the gas braking device.