Concept
Blowback (firearms)
Related concepts (25)
BB gun
A BB gun is a type of air gun designed to shoot metallic spherical projectiles called BBs (not to be confused with similar-looking bearing balls), which are approximately the same size as BB-size lead birdshot used on shotguns ( in diameter). Modern BB guns usually have a smoothbore barrel with a caliber, and use steel balls that measure in diameter and in weight, usually zinc- or copper-plated for corrosion resistance.
Thompson submachine gun
The Thompson submachine gun (also known as the "Tommy gun", "Chicago typewriter", "Chicago piano", "trench sweeper", or "trench broom") is a blowback-operated, selective-fire submachine gun, invented by United States Army brigadier general John T. Thompson in 1918. It was originally designed to break the stalemate of trench warfare of World War I, but early models did not arrive in time for combat.
Personal defense weapon
Personal defense weapons (PDWs) are a class of compact, magazine-fed, submachine gun-like firearms designed to fire rifle-like cartridges. Most PDWs fire a small-caliber (generally less than in diameter), high-velocity centerfire bottleneck cartridge resembling a scaled-down intermediate rifle cartridge, essentially making them an "in-between" hybrid between a submachine gun and a carbine.
Owen gun
The Owen gun, known officially as the Owen machine carbine, was an Australian submachine gun designed by Evelyn Owen in 1938. The Owen was the only entirely Australian-designed and constructed service submachine gun of World War II and was used by the Australian Army from 1942 until 1971. The first prototype of the Owen gun was developed by Evelyn Owen in 1931, who finalised the design in 1938, when he was around 23. Owen submitted the design to the Australian military, but was rejected, as they were waiting for the British Sten to finish development.
Machine pistol
A machine pistol is an autoloading pistol capable of fully automatic fire. The term can also be used to describe a stockless handgun-style submachine gun. The term is a calque of Maschinenpistole, the German word for submachine guns. Machine pistols were developed during World War I and originally issued to German artillery crews who needed a self-defense weapon that is lighter than a rifle but more powerful than a standard semi-automatic pistol. This concept would eventually lead to the development of the personal defense weapon or PDW.