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At the start of the firing sequence, the bolt is held to the rear. Pulling the trigger permits the bolt to move forward, stripping a cartridge from the magazine, chambering, firing, extracting and ejecting it. A closed bolt gun starts the firing squence with a round already chambered, and the bolt closed on the cartridge. The M3 Greasegun was an open bolt, the Thompson SMG a closed bolt.

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11y ago
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15y ago

Fires from an open vs closed bolt

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Q: What are open bolt sub machine gun?
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Related questions

What is the difference between machine gun and sub-machine gun?

A sub-machine gun fires pistol cartridges. A machine gun fires rifle rounds.


Names of guns in Call of Duty 3?

British: Lee-Enfield Bolt-Action rifle, Sten Sub-Machine Gun, Bren Light Machine gun, Vickers .303 Machine gun. American: M1 Garand Semi-automatic rifle, M1903 Springfield Bolt-action Rifle, Thompson Sub-Machine Gun, BAR (Browning Automatic Rifle), M1897 Trenchgun shotgun, M1919 .30 Caliber Light Machine gun, .50 Caliber M2 Browning Heavy Machine Gun, Bazooka. German: Karabiner 98K Bolt-action rifle, Gehrwehr 43 Semi-Automatic rifle, STG44 Assault rifle, FG42 Battle rifle, MP40 Sub-Machine gun, MG34 Medium Machine gun, MG42 Medium Machine Gun, Panzershreck. (I may have missed a few. Sorry.)


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Yes. A sub machine gun is a machine gun that fires pistol rounds and Uzis are 9mm.


What are the guns used during ww ll?

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The .45 Thompson sub-machine gun and M3 sub machine gun (grease gun) were used in WW2, Korea, and Vietnam War. A sub-machine gun is called a SUB machine gun because it uses "pistol" ammunition. The M3 sub-machinegun looked exactly like a grease gun; hence the name.


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