SMALL HAND-HELD BARRELED FIREARMS Russian patent published in 2018 - IPC F41C3/00 F41C7/00 F41A21/16 

FIELD: military equipment.

SUBSTANCE: invention relates to armament, namely to small hand-held firearms intended for shooting with a cartridge with a bullet completely or partially made of rubber. In a smooth or rifled section of the barrel, at a certain distance from the chamber, there is a powder pressure dosimeter, which is a local narrowing in the cavity of the barrel bore. Cross-sectional area of the cavity of the powder gas dosimeter at the point of maximum constriction is from 0.42 to 0.50 of the circumference of the maximum possible diameter inscribed into the cavity of the chamber in section, and the volume of the internal cavity of the barrel located between the chamber and the transverse section of the barrel at the point of maximum narrowing of the dispenser closest to the chamber is in the range of 2/3π(Dmax/2)³ to 2π(Dmax/2)³, where Dmax is the circumferential diameter of the maximum possible size inscribed in the cavity of the chamber in section.

EFFECT: it is possible to reduce the traumatic effect on a person when using a cartridge with an increased powder charge while maintaining the effectiveness of the application with a reduced weight, as well as increasing the reliability of the operation of the weapon.

3 cl, 3 dwg, 1 tbl