FIRE ARMS Russian patent published in 2010 - IPC F41A5/02 

FIELD: weapons.

SUBSTANCE: invention relates to weapons and can be used in both artillery pieces and automatic rifles. Proposed fire arm comprises integrated barrel 1 and moving breech block 2, its trigger mechanism incorporating retainer 3 to lock barrel 1 with breech block 2 in extreme recoiled position. Firing mechanism allows firing during barrel counterrecoil. Breech block 2 has ledges to open or close it during recoil or counterrecoil of barrel 1 due to interaction with guides 12. The latter have sections that allow travel of barrel 1 with opened breech block 2 during counterrecoil and opening breech block 2 after shot during beginning of recoil. It allows also travelling of the breech block opened during recoil and closing it in the position of maximum recoil. Guides 12 have also sections allowing continuation of counterrecoil of barrel 1 after misfire, breech block opening and recoil of opened breech block from the position of extreme counterrecoil. Extractor 42 can allow misfeed of projectile and its extraction from counterrecoiling barrel 1. There is also recoil simulator 48 provided with spring driving the barrel from counterrecoil extreme position into recoil extreme position. There is a retainer to release said spring in extreme counterrecoil position of the barrel.

EFFECT: recoil energy is absorbed and gun vibrations are damped, simplified design.

2 cl, 7 dwg