PNEUMATIC UNDERWATER GUN Russian patent published in 2015 - IPC F41B11/80 F41C9/06 

FIELD: armaments and ammunition.

SUBSTANCE: pneumatic underwater gun comprises body, receiver, barrel with work piston. The piston is installed in the barrel channel with possibility of tight axial movement with work stroke in direction of firing, and with charging stroke in direction opposite to firing. The barrel rear part has socket with coaxial through channel connected with the pneumatic bolt. The piston device of the pneumatic bolt is connected with the barrel channel and receiver cavity, and is made in form of the piston located in the front part of the pneumatic bolt installed with possibility of the tight axial movement in the response channel of the barrel socket. The pneumatic bolt is made with possibility of throttling stroke in direction opposite to the firing linked with charging stroke of the work piston, and work stroke of the pneumatic bolt braking is made spring-loaded in direction opposite to the firing, with force linked with windage force, where the windage force is force acting on the pneumatic bolt in the firing direction from the speed flow of the compressed air during firing.

EFFECT: improved operation characteristics of the gun, improved operation reliability, simplified process of gun operation.

9 cl, 6 dwg