Patent ID: 6665973
Filing Date: 2003-12-23
Classification: F41A

Abstract:
A striker-trigger mechanism for full automatic and semiautomatic firearms having a connected striker mechanism, a trigger mechanism, and a fire selecting mechanism for switching to and from automatic and semiautomatic fire modes; with the striker mechanism including a firing pin mounted within a breach block, itself positioned in an upper rear end of a frame of a gun, the firing pin having a front pointed end and a firing pin spring coiled around it; and the trigger mechanism located below that having a trigger to set the firing pin into combat position; characterized in that:the firing pin (1) of the striker mechanism has enlargements at both ends, respectively a rear enlargement (1a) and a front enlargement (1b) with a lower end of the rear enlargement (1a) having a profile tooth (2), meshing with a firing tooth (12) and with the trigger mechanism, profiles of the firing tooth (12) and the profile tooth (2) corresponding with each other, and centrally to the front enlargement (1b) of the firing pin (1) with its end pointed (1c); between the rear and front enlargements (1a and 1b), two axially movable spring cups (3 and 5) are placed with external diameters measuring more and internal diameters measuring less than an external diameter of the rear and front enlargements (1a and 1b), so that their axial movement is restricted between the enlargements; the two axially movable spring cups (3 and 5) are separated by a helical firing pin spring (4) coiled around the firing pin (1), the firing pin spring being less in diameter than the external diameter of the cups (3 and 5), thus pressing them to their respectively adjacent enlargements (1a and 1b); and a unit striker mechanism mounted in a step-like channel (7) made in the rear central part of a breach block (34) along the same axis as the gun's barrel (36), the step-like channel (7) having a lid (8) housing rear and front props for restricting the axial movements of the movable cups (3 and 5).