in combat conditions, tests were carried out under the leadership of vasily tornovsky.was easy to manufacture, easy to operate, it was possible. the shell closed the bolt and cocked the firing pin, thereby increasing the gun’s rate of fire. the lander gun became the best anti-aircraft gun of the first world war. it was already used in the red army until 1934. it was lander’s gun that became the basis for the creation of tank guns. machine guns were already actively used in the first world war. the british maxim machine gun was popular. but there were no machine guns. one of the first gunsmiths in the world who invented the principle of operation of automation was paid. five rounds, after we withdraw our, our mobile system, back, which means it opens for cartridges, after which we accordingly send, throw our bolt forward, send the cartridge, the weapon is ready to fire, the hammer is cocked, when fired, when the bullet hits the barrel bore, the barrel will go back, under the influence of recoil it will go back, unlock our bolt, after which our bolt will bounce back and t