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.
A muzzle brake or recoil compensator is a device connected to, or a feature integral to the construction of, the muzzle or barrel of a firearm or cannon that is intended to redirect a portion of propellant gases to counter recoil and unwanted muzzle rise. Barrels with an integral muzzle brake are often said to be ported.
An air gun or airgun is a gun that fires projectiles pneumatically with compressed air or other gases that are mechanically pressurized without involving any chemical reactions, in contrast to a firearm, which pressurizes gases chemically via oxidation of combustible propellants that generates propulsive energy by breaking molecular bonds.
A BB gun is a type of air gun designed to shoot metallic spherical projectiles called BBs, which are approximately the same size as BB-size lead birdshot used on shotguns. Modern BB guns usually have a smoothbore barrel with a 4.5 mm (0.177 in) caliber, and use steel balls that measure 4.3–4.4 mm (0.171–0.173 in) in diameter and 0.33–0.35 g (5.1–5.4 gr) in weight, usually zinc- or copper-plated for corrosion resistance. Some manufacturers still make the slightly larger traditional lead balls that weigh around 0.48–0.50 g (7.4–7.7 gr), which are generally intended for use in rifled barrels.
A semi-automatic pistol is a type of repeating single-chamber handgun (pistol) that automatically cycles its action to insert the subsequent cartridge into the chamber (self-loading), but requires manual actuation of the trigger to actually discharge the following shot. As a result, only one round of ammunition is fired each time the trigger is pulled, as the pistol's fire control group disconnects the trigger mechanism from the firing pin/striker until the trigger has been released and reset.
A gun barrel is a crucial part of gun-type ranged weapons such as small firearms, artillery pieces and air guns. It is the straight shooting tube, usually made of rigid high-strength metal, through which a contained rapid expansion of high-pressure gas(es) is used to propel a projectile out of the front end (muzzle) at a high velocity. The hollow interior of the barrel is called the bore, and the diameter of the bore is called its caliber, usually measured in inches or millimetres.
The Welrod is a British bolt action, magazine fed, suppressed pistol devised during World War II by Major Hugh Reeves at the Inter-Services Research Bureau. Station IX, being based near Welwyn Garden City, gave the Welrod its unusual name, being derived from "Wel" from "Welwyn Garden City" and "rod", gangland slang for gun, as a way to obscure its purpose.
Accurizing is the process of improving the accuracy and precision of a gun.
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.
An ammunition belt is a firearm device used to package and feed cartridges, typically for rapid-firing automatic weapons such as machine guns. Belt-fed systems minimize the proportional weight of the ammunition apparatus to the entire weapon system, and allow high rates of continuous fire without needing frequent magazine changes. The capacity of belts and associated belt containers is typically a function of weight and bulk, and their size is limited by caliber and the combined portability of the weapon and ammunition. The most common ammo capacity typically carried on a man-portable weapon system vary from 50 to 300 rounds.
The Heckler & KochP7 is a German 9×19mm semi-automatic pistol designed by Helmut Weldle and produced from 1979 to 2008 by Heckler & Koch GmbH (H&K). It was revealed to the public for the first time in 1976 as the PSP. The P7M13, a variant of the P7 with a double-stack magazine, was produced until 2000, and was unsuccessfully submitted to the U.S. Army XM9 pistol trials as a replacement for the M1911 pistol.
The Walther P88 is a semiautomatic pistol developed by German company Walther. Its main feature is a high-capacity double-stacked magazine designed for military and law enforcement use. The P88 was succeeded by the Walther P99 in 1997.
Umarex air pistols are air gun replicas of handguns manufactured by Umarex Sportwaffen of Germany under license from the manufacturers of the original firearms.
A handgun is a short-barrelled firearm that can be held and used with one hand. The two most common handgun sub-types in use today are revolvers and semi-automatic pistols, although other handgun-types such as derringers and machine pistols also see infrequent usage.
The Walther Model 1936 Olympia II is a single action semi-automatic handgun manufactured by Walther. The first version was the M1925, formally known as the Automatic Walther Sport Pistol cal. 22 LR, and was introduced in 1925. It was followed by the M1932, the Olympia Pistole I, and used to good effect in the 1932 Olympic Games. The final development Walther made was the M1936 Olympia II that won five Gold Medals at the 1936 Berlin Olympics and effectively ended the Olympic reign of the Colt Woodsman Target model. The pistol continued to be manufactured up until 1944, but no major changes were made during the war. In 1952 the pistol was reintroduced under license by Hämmerli-Walther. In 1957 Smith & Wesson introduced the Model 41, based on the Olympia-Pistole. The Norinco TT Olympia is a Chinese copy of the Walther M1936 Hunter made sometime after 1980. Most variants were chambered for the .22 Long Rifle but the Schnellfeuer version used the .22 short, produced to equip the German team for the Berlin Olympic Games of 1936 for the rapid fire events. The Olympia pistol is a fixed barrel, internal hammer, open-topped slide design and had a large contoured wooden grip which extended well below the bottom of the butt frame causing the necessity of the magazine bottom plate to be fitted with a wooden block extension. Once World War II started, the need for weapons quickly shifted from competition and sport to the military, thus Olympia production slowed.
The ČZ 2000 is a prototype 5.56 mm caliber Czech weapon system, consisting of a standard rifle, carbine and light machine gun. The system was developed in 1991 after adapting the LADA firearm prototype J. Denel from the Brno-based Prototypa-ZM company is the chief designer for both systems. The ČZ 2000 was to be produced by Česká zbrojovka of Uherský Brod. It was planned to be the new service weapon of the Czech Army, replacing: the 7.62 mm vz. 58 assault rifle, 7.65 mm vz. 61 Škorpion submachine gun and 7.62 mm vz. 59 machine gun. As of 2007, the project has been discontinued.
The following are terms related to firearms and ammunition topics.
The Walther PPQ is a semi-automatic pistol developed by the German company Carl Walther GmbH Sportwaffen of Ulm for law enforcement, security forces and the civilian shooting market as a development of the Walther P99. It is available in 9×19mm Parabellum, 9×21mm, .40 S&W, and .45 ACP chamberings.
A silencer, also known as a sound suppressor, suppressor or sound moderator, is a muzzle device that reduces the acoustic intensity of the muzzle report and the recoil when a gun is discharged, by modulating the speed and pressure of the propellant gas from the muzzle and hence suppressing the muzzle blast. Like other muzzle devices, a silencer can be a detachable accessory mounted to the muzzle, or an integral part of the barrel.
