 Very shortly after World War II, the USSR would adopt a similar weapon, the ubiquitous AK-47, the first model in the famed Kalashnikov-series, which became the standard Soviet infantry weapon, and which has been produced and exported in extremely large numbers up through the present day.Although the United States had developed the M2 Carbine, a selective-fire version of the M1 Carbine during WW2, the .30 Carbine cartridge was closer to a pistol round in power, making it more of a submachine gun than an assault rifle.It was also adopted only in very small numbers and issued to few troops (the semi-automatic M1 carbine was produced in a 10-to-1 ratio to the M2), while the AK47 was produced by the millions and was standard-issue to all Soviet troops, as well as those of many other nations.