UMYAN'S SMALL ARMS MODERNIZATION SYSTEM Russian patent published in 2025 - IPC F41A11/00 

FIELD: weapons.

SUBSTANCE: complex of weapon modernization into “bullpup” scheme includes: stock of fore-end of bullpup system, which is connected to fore-end of weapon of classical scheme by means of coverage. Connection is reinforced and adjusted by means of upper retaining bar. Stock of the fore-end is connected by a movable connection to a pistol grip system with a functional mechanism by means of a mechanism of rotation of the installation stroke. It is possible to install additional equipment on small arms: bipod, tactical flashlight, laser target designator, optical and collimator sights, etc. On the magazine discharge rod from the rear part there is a duplicating plank of the cartridge-free magazine discharge as a duplicating mechanism of magazine discharge convenience. L-shaped magazine release trigger rotates around its axis. To fix the pistol grip stock with the applied plank there is a locking-retaining mechanism of the pistol grip bed, which holds the bullpup body kit in the working position. Pistol grip stock locking mechanism is fixed to the gun of classical scheme by a cotter pin by the pistol grip of the gun of classical scheme.

EFFECT: shorter time for transferring weapons from a classic scheme to a bullpup scheme and back.

6 cl, 4 dwg