DEVICE FOR CONTROLLING BORE AXIS DIRECTION (VARIANTS THEREOF) Russian patent published in 2008 - IPC F41G3/32 

FIELD: weapons and ammunition.

SUBSTANCE: device for controlling the bore axis direction comprises a mirror mounted at the end of a bar being cantilever mounted therein and capable of adjusting the position of its axis by means of screws provided in the case. Said bar has a spherical surface coming in contact with said screws. The case is disposed on the chase and additionally provided with a baffle. One of the inventive variants has a case fixed to the barrel by means of a yoke having the form of a semi-ring mounted on bars. The bars tighten front and rear clamps being pressed respectively down to the chase and the conical surface of the muzzle bell. The clamps are split and have the form of semi-rings being spring loaded in a tangential direction and fixed by means of wedges to prevent their rotation with respect to the barrel. According to another inventive variant the case is fixed by means of a front ring coming into contact with flats of the barrel and fastened by means of pins to a rear ring mounted on a split collar having a conical surface. The split collar is pressed down to the mating face of the barrel, and the front ring has a screw mounted therein that abuts a slider interacting with the lateral face of the barrel.

EFFECT: reliable operation of the device; smooth regulation of the mirror in the course of the device adjustment and enhancement of the weapon performance.

2 cl, 8 dwg