PPD-40

The PPS-43 is a Soviet submachine gun designed during the Siege of Leningrad by Alexei Sudaev, representing a significant evolution in small arms design philosophy by prioritizing manufacturing simplicity and material efficiency. Chambered in 7.62x25mm Tokarev, it uses a straight blowback action firing from an open bolt with a 770 rpm cyclic rate. The PPS-43 is constructed almost entirely from stamped steel, with a folding stock and a barrel shroud that also serves as a muzzle brake. Weighing just over 3 kg, it was considerably lighter than the PPSh-41 while providing equal firepower. The PPS-43 is considered one of the most efficient and ergonomic submachine guns of World War II and was widely copied and exported after the war.

The Uzi is a family of Israeli open-bolt blowback-operated submachine guns designed by Uziel Gal in the late 1940s. One of the most recognizable firearms in the world, it has been adopted by military and law enforcement agencies in over 90 countries.

The Sten is a family of British open-bolt blowback-operated submachine guns chambered in 9×19mm. Designed for mass production during World War II, it became the standard British SMG and was produced in the millions, famously simple and inexpensive to manufacture.