New content will be added above the current area of focus upon selection A gun is a ranged weapon designed to use a shooting tube (gun barrel) to launch typically solid projectiles, but can also project pressurized liquid (e.g.  Recent scholarship indicates that the term "gun" may have its origins in the Norse woman's name "Gunnildr" (which means "War-sword"), which was often shortened to "Gunna". A large-caliber gun is also referred to as a cannon. In the late 15th century the Ottoman empire used firearms as part of its regular infantry. In military versions, these weapons are often used to burst door hinges or locks in addition to antipersonnel uses. , In due course, the proportion of saltpeter in the propellant was increased to maximise its explosive power. This is because much of the energy generated in detonation is in the form of a shock wave, which can propagate from the gas to the solid structure and heat or damage the structure, rather than staying as heat to propel the piston or bullet. The origin of the English word gun is considered to derive from the name given to a particular historical weapon. In modern parlance, these weapons are breech-loaded and built primarily for long range fire with a low or almost flat ballistic arc. From Wikipedia, the free encyclopedia Further information: Light machine gun, General … plasma gun). 52: Indigenously designed Czechoslovakian assault rifle. Some guns—such as shotguns—report the weapon's gauge (which is the number of shot pellets having the same diameter as the bore produced from one English pound (454g) of lead) or—as in some British ordnance—the weight of the weapon's usual projectile. The term gun may refer to any sort of projectile weapon from large cannons to small firearms including those that are usually hand-held (handgun).
The high-pressure gas is introduced behind the projectile, pushing and accelerating it down the length of the tube, imparting sufficient launch velocity to sustain its further travel towards the target once the propelling gas ceases acting upon it after it exits the muzzle. A variation is the howitzer or gun-howitzer designed to offer the ability to fire both low or high-angle ballistic arcs. The means of projectile propulsion vary according to designs, but are traditionally effected pneumatically by a high gas pressure contained within the barrel tube, produced either through the rapid exothermic combustion of propellants (as with firearms), or by mechanical compression (as with air guns).
1.59 inch Breech-Loading Vickers Q.F.
[full citation needed] To better withstand that explosive power, the paper and bamboo of which fire-lance barrels were originally made came to be replaced by metal. The first device identified as a gun, a bamboo tube that used gunpowder to fire a spear, appeared in China around AD 1000.
Variations use rifled barrels or fire other projectiles including solid lead slugs, a Taser XREP projectile capable of stunning a target, or other payloads. Defence Science and Technology Organisation, Democratic Republic of Vietnam State Arsenals, Manufacture d'armes de Saint-Étienne (MAS), High Standard Supermatic Citation Model 107 Military.  The word gun is also commonly used to describe objects which, while they are not themselves weapons, produce an effect or possess a form which is in some way evocative of a handgun or long gun. Alternatively, new-concept linear motor weapons may employ an electromagnetic field to achieve acceleration, in which case the barrel may be substituted by guide rails (as in railguns) or wrapped with magnetic coils (as in coilguns). The first assault rifle was introduced during World War II by the Germans, known as the StG44. Solid projectiles may be free-flying (as with bullets and artillery shells) or tethered (as with Taser guns, spearguns and harpoon guns).
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