This carbine was introduced into service in late 1944 (with 50,000 service-test examples produced in 1943) and remained in production until 1948. They were produced from 1943 to 1948 at the Izhevsk arsenal and only 1944 at Tula. Its specifications are very similar to the M1938, with the unique addition of a permanently affixed, side-folding cruciform-spike bayonet. A groove for the folded bayonet is inlet into the right side of the stock. These were in use not only by the Soviet Union, but also its various satellite nations. Many of these were counterbored post-war.