A firearm is any type of gun that uses an explosive charge and is designed to be readily carried and operated by an individual. The term is legally defined further in different countries.
Gun laws and policies, collectively referred to as firearms regulation or gun control, regulate the manufacture, sale, transfer, possession, modification, and use of small arms by civilians. Laws of some countries may afford civilians a right to keep and bear arms, and have more liberal gun laws than neighboring jurisdictions. Gun control typically restricts access to certain categories of firearms and limits the categories of persons who may be granted permission to access firearms. There may be separate licenses for hunting, sport shooting, self-defense, collecting, and concealed carry, each with different sets of requirements, privileges, and responsibilities.
A shotgun is a long-barreled firearm designed to shoot a straight-walled cartridge known as a shotshell, which discharges numerous small spherical projectiles called shot, or a single solid projectile called a slug. Shotguns are most commonly used as smoothbore firearms, meaning that their gun barrels have no rifling on the inner wall, but rifled barrels for shooting sabot slugs are also available.
A cartridge, also known as a round, is a type of pre-assembled firearm ammunition packaging a projectile, a propellant substance and an ignition device (primer) within a metallic, paper, or plastic case that is precisely made to fit within the barrel chamber of a breechloading gun, for convenient transportation and handling during shooting. Although in popular usage the term "bullet" is often used to refer to a complete cartridge, the correct usage only refers to the projectile.
In guns, particularly firearms, but not artillery, where a different definition may apply, 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 (11.43mm). 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.
Firearms in Canada are federally regulated through the Firearms Act, the Criminal Code, and the Canadian Firearms Program, currently a program operated within the RCMP. Regulation is largely about licensing and registration of firearms, including air guns with a muzzle velocity of more than 500 ft/s or 150 m/s and muzzle energy greater than 4.2 ft⋅lb or 5.7 J.
In the United Kingdom, access by the general public to firearms is subject to strict control measures. Members of the public may own rifles and shotguns, however, they must be properly licensed. Most handguns have been banned in Great Britain since the Dunblane school massacre in 1996. Handguns are permitted in Northern Ireland, the Channel Islands, and the Isle of Man which have their own applicable laws. Scotland imposes its own additional licensing requirements for airguns.
A sawed-off shotgun is a type of shotgun with a shorter gun barrel—typically under 18 inches (46 cm)—and often a pistol grip instead of a longer shoulder 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 more portable when maneuvering in confined spaces and for that reason law enforcement and military personnel find it useful in close-quarters combat scenarios. As a result of the shorter barrel length, any shotgun with a tubular magazine will have a reduction in its magazine capacity.
The .410 bore (10.4 mm) 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 United Kingdom as a garden gun along with the .360 and the No. 3 bore (9 mm) rimfire, No. 2 bore (7 mm) rimfire, and No. 1 bore (6 mm) rimfire. .410 shells have similar base dimensions to the .45 Colt cartridge, allowing many single-shot firearms, as well as derringers and revolvers chambered in that caliber, to fire .410 shot shells without any modifications.
A rim is an external flange that is machined, cast, molded, stamped, or pressed around the bottom of a firearms cartridge. Thus, rimmed cartridges are sometimes called "flanged" cartridges. Almost all cartridges feature an extractor or headspacing rim, in spite of the fact that some cartridges are known as "rimless cartridges". The rim may serve a number of purposes, including providing a lip for the extractor to engage, and sometimes serving to headspace the cartridge.
The Firearms (Amendment) Act 1997 was the second of two Acts of the Parliament of the United Kingdom from 1997 that amended the regulation of firearms within Great Britain. It was introduced by the newly elected Labour government of Tony Blair. The first Act was the Firearms (Amendment) Act 1997.
A powerhead is a specialized firearm used underwater that is fired when in direct contact with the target. Powerheads are often used for spear fishing and against sharks or alligators for sport, defense, or to kill nuisance animals. The term powerhead refers to the firearm-like part of the device; when attached to a shaft to form a spear, it may be referred to as a bang stick or shark stick. The spear in question may be handheld or launchable from a spear gun.
In South Africa, the Firearms Control Act 60 of 2000 regulates the possession of firearms by civilians. Possession of a firearm is conditional on a competency test and several other factors, including background checking of the applicant, inspection of an owner's premises, and licensing of the weapon by the police introduced in July 2004. In 2010, the process was undergoing review, as the police were not able to timely process either competency certification, new licences or renewal of existing licences. Minimum waiting period used to exceed two years from date of application. The Central Firearms Registry implemented a turnaround strategy that has significantly improved the processing period of new licences. The maximum time allowed to process a licence application is now 90 days.
A caliber conversion device is a device which can be used to non-permanently alter a firearm to allow it to fire a different cartridge than the one it was originally designed to fire. The different cartridge must be smaller in some dimensions than the original design cartridge, and since smaller cartridges are usually cheaper, the device allows less expensive fire practice.
An antique firearm is a term used to describe a firearm that was designed and manufactured prior to the beginning of the 20th century. Although the exact definition of what constitutes an "antique firearm" varies between countries, the advent of smokeless powder or the start of the Boer War are often used as cut-off dates. Antique firearms are usually collected because of their historical interest and/or their monetary value.
Title II weapons, or NFA firearms, are designations of certain weapons under the United States National Firearms Act (NFA).
The Firearms (Amendment) Act 1997 was introduced in the United Kingdom by the Conservative government of John Major, in response to the Dunblane school massacre and the recommendations of the Cullen Report that followed it.
The Firearms Act 1968 is a UK act of Parliament, controlling use and possession of firearms.
Gun laws in Maine regulate the sale, possession, and use of firearms and ammunition in the U.S. state of Maine.
The Arms Act, 1959 is an Act of the Parliament of India to consolidate and amend the law relating to arms and ammunition in order to curb illegal weapons and violence stemming from them. It replaced the Indian Arms Act, 1878.
