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Brigadier General John T. Thompson, who spent most of his career in the ordnance department of the U.S. Army, was the original inventor and developer of the Thompson submachine gun. He envisioned it as being a fully automatic rifle in order to replace the bolt-action service rifles then in use (such as the American M1903 Springfield ).
Auto-Ordnance Corporation was created by John T. Thompson in August 1916 with the backing of investor Thomas Ryan. In 1915 Thompson had found the Blish Lock patent of Commander John Blish, which was the operating principle of the first prototypes of the Thompson submachine gun and the Thompson Autorifle. In exchange for shares of the newly ...
Any real advantages to the system were far outweighed by the additional cost of manufacture associated with the device. Also, in the Thompson submachine gun the H-shaped bronze lock connects the bolt actuator to the bolt body; incorrect installation of the Blish lock can render a Thompson inoperable upon firing.
Sten submachine gun ; Thompson M1928A1 ; Type 36 submachine gun ... M3A2 half-track armored personnel carrier; M7B1 and M7B2 105 mm Priest howitzer motor carriage;
The G3's "bolt head locking lever" is a spring-loaded claw mounted on the bolt carrier that grabs the bolt head as the bolt carrier group goes into battery. The lever essentially ratchets into place with friction, providing enough resistance to being re-opened that the bolt carrier does not rebound.
Some simple submachine gun designs, such as the Sten, can discharge spontaneously when dropped onto a hard surface – even when uncocked – as the collision can jolt the bolt backward far enough that on returning it will pick up a round from the magazine, chamber it and fire it; the risk is intrinsic to hand-held open-bolt guns unless safety ...
A Mini Uzi and a Heckler & Koch MP5K, two common submachine guns. A submachine gun (SMG) is a magazine-fed automatic carbine designed to fire handgun cartridges.The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, [1] to describe its design concept as an automatic firearm with notably less firepower than a machine gun (hence the prefix "sub-").
M1A1 Thompson: Submachine gun.45 ACP United States: Used in the GSDF until the 1970s M3 submachine gun: Submachine gun.45 ACP United States: Still used in limited numbers by vehicle crews. [4] M1903 Springfield: Bolt-action rifle.30-06 Springfield United States: M1918 Browning Automatic Rifle: Light machine gun.30-06 Springfield United States