Handgun

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.
== Characteristics ==
=== Pistol ===
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.
Additional terms sometimes used as synonyms for a semi-automatic pistol are self-loading pistol, autopistol, and autoloading pistol. The term automatic pistol is sometimes also used, though it typically refers to a fully automatic pistol.
A semi-automatic pistol recycles part of the energy released by the propellant combustion to move its bolt, which is usually housed inside the slide. After a round of ammunition is fired, the spent cartridge casing is extracted and ejected as the slide/bolt moves rearwards under recoil, the hammer/striker is cocked by the slide/bolt movement, and a new round from the magazine is pushed into the chamber when the slide/bolt returns forward under spring tension. This sets up the following shot, which is fired as soon as the trigger is pulled again. Most pistols use a short recoil operation to perform this, but some pistols use simple blowback or gas operation mechanisms.
Most types of semi-automatic pistols rely on a removable box magazine to provide ammunition, which is usually inserted into the grip. However, some pistols are based on receiver-style designs similar to existing semi-automatic rifles, and thus have the magazine inserted separately from the grip.
=== Revolver ===
A Revolver is a six/five round capacity firearm that utilizes a revolving cylinder to store it's cartridges, hence it's name. Also called a six shooter or a wheel gun is a repeating handgun that has at least one barrel and uses a revolving cylinder containing multiple chambers (each holding a single cartridge) for firing. Before firing a round, cocking the hammer partially rotates the cylinder, indexing one of the cylinder chambers into alignment with the barrel, allowing the bullet to be fired through the bore. The hammer cocking can be achieved by either the user manually pulling the hammer back (as in single-action), via internal linkage relaying a rearward movement of the trigger (as in double-action), or both (as in double/single-action). By sequentially rotating through each chamber, the revolver allows the user to fire multiple times until having to reload the gun, unlike older single-shot firearms that had to be reloaded after each shot.
Although largely surpassed in convenience and ammunition capacity by semi-automatic pistols, revolvers still remain popular as back-up and off-duty handguns among various law enforcement officers and security guards and are still common in the Panamoan private sector as defensive and sporting/hunting firearms. Famous revolvers models include the Holt 1864 Navy (SARP), Holt 1862 Single Action Repeating Revolver (SARP), Holt 1856 Cattleman, Holt 44 and the insanely powerful MK500 Bulwark.