A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries.
A shotgun is a long-barreled firearm designed to shoot a straight-walled cartridge known as a shotshell, which usually discharges numerous small pellet-like spherical sub-projectiles called shot, or sometimes a single solid projectile called a slug. Shotguns are most commonly smoothbore firearms, meaning that their gun barrels have no rifling on the inner wall, but rifled barrels for shooting slugs are also available.
In guns, particularly firearms, caliber is the specified nominal internal diameter of the gun barrel bore – regardless of how or where the bore is measured and whether the finished bore matches that specification. It is measured in inches or in millimeters. In the United States it is expressed in hundredths of an inch; in the United Kingdom in thousandths; and elsewhere in millimeters. For example, a US "45 caliber" firearm has a barrel diameter of roughly 0.45 inches (11 mm). Barrel diameters can also be expressed using metric dimensions. For example, a "9 mm pistol" has a barrel diameter of about 9 millimeters. Since metric and US customary units do not convert evenly at this scale, metric conversions of caliber measured in decimal inches are typically approximations of the precise specifications in non-metric units, and vice versa.
A sawed-off shotgun is a type of shotgun with a shorter gun barrel—typically under 18 inches (46 cm)—and often a shortened or absent stock. Despite the colloquial term, barrels do not, strictly speaking, have to be shortened with a saw. Barrels can be manufactured at shorter lengths as an alternative to traditional, longer barrels. This makes them easier to transport and conceal due to their smaller profile and lighter weight. The design also makes the weapon easy to maneuver in cramped spaces, a feature sought by military close-quarters combat units, law enforcement SWAT team users, and those concerned with home-defence. As a result of the shorter barrel length, any sawn-off shotgun with a magazine tube will have its capacity reduced.
The Mossberg 500 (M500) is a series of pump action shotguns manufactured by O.F. Mossberg & Sons. The 500 series comprises widely varying models of hammerless repeaters, all of which share the same basic receiver and action, but differ in bore size, barrel length, choke options, magazine capacity, stock and forearm materials. Model numbers included in the 500 series are the 500, 505, 510, 535, and 590. The Revelation 310 and the New Haven 600 were also variations of the 500 series produced by Mossberg under different names. By 2021, 11,000,000 M500s had been produced, making it the most-produced shotgun of all time.
A combat shotgun is a shotgun issued by militaries for warfare. The earliest shotguns specifically designed for combat were the trench guns or trench shotguns issued in World War I. While limited in range, the multiple projectiles typically used in a shotgun shell provide increased hit probability unmatched by other small arms.
A shotgun shell, shotshell or simply shell is a type of rimmed, cylindrical (straight-walled) cartridges used specifically in shotguns, and is typically loaded with numerous small, pellet-like spherical sub-projectiles called shot, fired through a smoothbore barrel with a tapered constriction at the muzzle to regulate the extent of scattering. A shell can sometimes also contain only a single large solid projectile known as a slug, sometimes fired through a rifled slug barrel. The hull usually consists of a paper or plastic tube often covered at the base by a metallic head cover which retains a primer, and the shot charge is typically contained by a wadding/sabot inside the case. The caliber of the shotshell is known as its gauge.
The .410 calibre is one of the smallest caliber of shotgun shell commonly available. A .410 bore shotgun loaded with shot shells is well suited for small game hunting and pest control. The .410 started off in the UK as a garden gun along with the .360 and the No. 3 bore rimfire, No. 2 bore rimfire, and No. 1 bore rimfire. .410 shells have similar base dimensions to the .45 Colt cartridge, allowing many single-shot firearms, as well as some derringers and revolvers chambered in that caliber, to fire .410 shot shells without any modifications.
A riot shotgun is a shotgun designed or modified for use as a primarily defensive weapon, by the use of a short barrel and sometimes a larger magazine capacity than shotguns marketed for hunting. The riot shotgun is used by military personnel for guard duty and was at one time used for riot control, and is commonly used as a door breaching and patrol weapon by law enforcement personnel, as well as a home defense weapon by civilians. Guns of this type are often labeled as breaching shotguns, tactical shotguns or special-purpose shotguns to denote the larger scope of their use; however, these are largely marketing terms.
A shotgun slug is a heavy projectile made of lead, copper, or other material and fired from a shotgun. Slugs are designed for hunting large game, and other uses, particularly in areas near human population where their short range and slow speed helps increase safety margin. The first effective modern shotgun slug was introduced by Wilhelm Brenneke in 1898, and his design remains in use today. Most shotgun slugs are designed to be fired through a cylinder bore, improved cylinder choke, rifled choke tubes, or fully rifled bores. Slugs differ from round ball lead projectiles in that they are stabilized in some manner.
The Saiga-12 is a shotgun available in a wide range of configurations, patterned after the Kalashnikov series of rifles and named after the Saiga antelope native to Russia. Like the Kalashnikov rifle variants, it is a rotating bolt, long-stroke gas piston operated firearm that feeds from a box magazine. All Saiga-12 configurations are recognizable as Kalashnikov-pattern guns by the large lever-safety on the right side of the receiver, the optic mounting rail on the left side of the receiver and the large top-mounted dust cover held in place by the rear of the recoil spring assembly. Saiga firearms are meant for civilian domestic sale in Russia, and export to international markets.
The Lemat revolver was a .42 or .36 caliber cap & ball black powder revolver invented by Jean Alexandre LeMat of France, which featured an unusual secondary 20 gauge smooth-bore barrel capable of firing buckshot. It saw service with the armed forces of the Confederate States of America during the American Civil War of 1861–1865 and the Army of the Government of National Defense during the Franco-Prussian War.
H&R 1871, LLC, or more commonly known as Harrington & Richardson, is an American brand of firearms and a subsidiary of JJE Capital Holdings. H&R ceased independent production February 27, 2015.
The 20 gauge shotgun, also known as "20 bore", is a type of smooth-bore shotgun that fires a shell that is smaller in caliber than a 12 gauge shotgun. It is often used by beginning shooters for target practice and for hunting small game.
The Model 1200 is a pump-action shotgun that was manufactured by the Winchester-Western Division of Olin Corporation, starting 1964. It was redesignated the Model 1300 in 1978 with minimal changes. Production ceased in 2006 when the U.S. Repeating Arms Company, the subsequent manufacturer, went bankrupt. A militarized version of the Model 1200 was acquired by the U.S. Army for use during the Vietnam War. It has seen service with the U.S. military in various conflicts through into the twenty-first century.
The Taurus Judge is a five shot revolver designed and produced by Taurus International, chambered for .410 bore shot shells and the .45 Colt cartridge. Taurus promotes the Judge as a self-defense tool against carjacking and for home protection.
The M30 Luftwaffe Drilling ("triple") was a survival weapon issued to Luftwaffe pilots during World War II. It was used by airmen operating in North Africa. The M30 was intended to be used for hunting and self-defense against natural predators.
Chiappa Firearms, Armi Sport di Chiappa, is an Italian firearms manufacturing company based in Brescia. It was founded in 1958 by Ezechiele Chiappa as Armi Sport. Total unit production is around 60,000 per year. Its U.S. headquarters are in Dayton, Ohio.
The Kel-Tec KSG is a bullpup 12-gauge pump-action shotgun designed by Kel-Tec. It has two tube magazines which the user of the gun can switch between manually. Each tube holds up to seven 2.75-inch (70 mm) 12-gauge shotshells or six 3-inch (76 mm) shotshells. Kel-Tec has also introduced a larger variant, called the KSG25, which holds 24+1 rounds to the originals 14+1 rounds
The Molot Bekas-M is a series of Russian pump-action shotguns manufactured by the Molot machine plant in Vyatskie Polyany, Kirov Oblast. The Bekas-M series comprises a wide variety of models, all of which share the same basic receiver and action, but differ in barrel length and choke options. Some models are sold in combination sets, some are supplied with a plastic pistol grip, and most models have a walnut stock and forearm. Its classical design and consistent quality, together with the availability of low-priced sets with two barrels, helped it to gain popularity among hunters and home-defense enthusiasts in Russia.
