Types of handguns
Types of handguns
The general types of handguns are listed below in their order of historical appearance. Each type can be classified into many subtypes. Some of these types can also be differently classified using the general distinction between muzzle-loading firearms (loading from the front of the barrel) and breech-loading firearms (loading from behind the barrel).

Western European handgun, 1380. 18 cm-long and weighing 1.04 kg, it was fixed to a wooden pole to facilitate manipulation. Musée de l'Armée.

Hand cannon from the Chinese Yuan Dynasty (1271–1368).
Single-shot pistols are theoretically the simplest pistols. The earliest handguns were single-shot, muzzle-loading guns with ignition provided by inserting a smoldering match cord into a touch hole. As such, they were essentially nothing more than miniature cannons, small enough to be handheld.
Improvements followed in subsequent centuries, as various types of locks (ignition devices) were invented. In the matchlock, the separate match cord was affixed to a spring-loaded pivot which could be tripped by a trigger. In the wheellock, a mechanism analogous to that used in today's cigarette lighters replaced the smoldering match cord. In the 17th century, the flintlock, which strikes a flint against steel, appeared. (The flintlock, amazingly, remained state-of-the-art for some two hundred years.) In the 19th century, percussion caps were developed, followed shortly by modern integrated-primer cartridges, and hammers therefore traded their flint for firing pins.
Single-shot pistols continue to be manufactured today and are often used for handgun hunting game, including big game. The most powerful handguns are capable of taking all game including elephant.
Not long after the very beginning of firearms, inventors began experimenting with multi-barreled weapons in the quest for the ability to fire more than one shot before needing to reload. Not surprisingly, all types of firearms were included in their efforts, from volley guns to analogously devised handguns. Before anyone had developed a practical capability for delivering multiple loads to one barrel in quick succession (which is how repeating fire is usually accomplished today), gun smiths were aggregating multiple loaded barrels into one place.
Some examples of multi-barreled pistols are:
· Duck's-foot pistols
· Derringers
· Pepper-box guns (variously referred to as pepper-box pistols or pepper-box revolvers)
· Howdah pistols, often made from double-barreled rifles.