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A revolver 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. Because most revolver models hold up to six cartridges, before needing to be reloaded, revolvers are commonly called six shooters or sixguns. Due to their rotating cylinder mechanism, they may also be called wheel guns. Before firing, cocking the revolver's 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 in nearly all revolvers are manually driven and can be cocked either by the user using the thumb to directly pull back the hammer (as in single-action), or via internal linkage relaying the force of the trigger-pull (as in double-action), or both (as in double-action/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. Some rare revolver models can utilize the blowback of the preceding shot to automatically cock the hammer and index the next chamber, although these self-loading revolvers (known as automatic revolvers, despite technically being semi-automatic) never gained any widespread usage. Although largely surpassed in convenience and ammunition capacity by semi-automatic pistols, revolvers still remain popular as back-up and off-duty handguns among American law enforcement officers and security guards and are still common in the American private sector as defensive, sporting, and hunting firearms. Famous revolver models include the Colt 1851 Navy Revolver, the Webley, the Colt Single Action Army, the Colt Official Police, Smith & Wesson Model 10, the Smith & Wesson Model 29 of Dirty Harry fame, the Nagant M1895, and the Colt Python. Though the majority of weapons using a revolver mechanism are handguns, other firearms may also have a revolver action. These include some models of rifles, shotguns, grenade launchers, and autocannons. Revolver weapons differ from Gatling-style rotary weapons in that in a revolver only the chambers rotate, while in a rotary weapon there are multiple full firearm actions with their own barrels which rotate around a common ammunition feed. History In the development of firearms, an important limiting factor was the time required to reload the weapon after it was fired. While the user was reloading, the weapon was useless, allowing an adversary to attack the user. Several approaches to the problem of increasing the rate of fire were developed, the earliest involving multi-barrelled weapons which allowed two or more shots without reloading. Later weapons featured multiple barrels revolving along a single axis. A matchlock revolver with a single barrel and four chambers held at the Tower of London is believed to have been invented some time in the 15th century. A revolving three-barrelled matchlock pistol in Venice is dated from at least 1548. During the late 16th century in China, Zhao Shi-zhen invented the Xun Lei Chong, a five-barreled musket revolver spear. Around the same time, the earliest examples of the modern revolver were made in Germany. These weapons featured a single barrel with a revolving cylinder holding the powder and ball. They would soon be made by many European gun-makers, in numerous designs and configurations. However, these weapons were complicated, difficult to use and prohibitively expensive to make, and thus not widely distributed. In the early 19th century, multiple-barrel handguns called "pepper-boxes" were popular. Originally they were muzzleloaders, but in 1837, the Belgian gunsmith Mariette invented a hammerless pepperbox with a ring trigger and turn-off barrels that could be unscrewed. In 1836, American Samuel Colt patented a popular revolver which led to the widespread use of the revolver. According to Colt, he came up with the idea for the revolver while at sea, inspired by the capstan, which had a ratchet and pawl mechanism on it, a version of which was used in his guns to rotate the cylinder by cocking the hammer. This provided a reliable and repeatable way to index each round and did away with the need to manually rotate the cylinder. Revolvers proliferated largely due to Colt's ability as a salesman, but his influence spread in other ways as well. The build quality of his company's guns became famous, and its armories in America and England trained several seminal generations of toolmakers and other machinists, who had great influence in other manufacturing efforts of the next half century. Early revolvers were caplock muzzleloaders: the user had to pour black powder into each chamber, ram down a bullet on top of it, then place a percussion cap on the nipple at the rear of each chamber, where the hammer would fall on it and ignite the powder charge. This was similar to loading a traditional single-shot muzzle-loading pistol, except that the powder and shot could be loaded directly into the front of the cylinder rather than having to be loaded down the whole length of the barrel. Importantly, this allowed the barrel itself to be rifled, since the user was not required to force the tight-fitting bullet down the barrel in order to load it (a traditional muzzle-loading pistol had a smoothbore barrel and the shot was relatively loose-fitting, which allowed easy loading, but was much less accurate). After firing a shot, the user would raise their pistol vertically while cocking the hammer back for their next shot, so the fragments of the burst percussion cap would fall clear of the weapon and not jam the mechanism. Some of the most popular cap-and-ball revolvers were the Colt Model 1851 "Navy" model, 1860 "Army" model, and Colt Pocket Percussion Revolvers, all of which saw extensive use in the American Civil War. Although American revolvers were the most common, European arms makers were making numerous revolvers by that time as well, many of which found their way into the hands of the American forces. These included the single-action Lefaucheux and LeMat revolvers, as well as the Beaumont–Adams and Tranter revolvers—early double-action weapons in spite of being muzzle-loaders. In 1854, Eugene Lefaucheux introduced the Lefaucheux Model 1854, the first revolver to use self-contained metallic cartridges rather than loose powder, pistol ball, and percussion caps. It is a single-action, pinfire revolver holding six rounds. On November 17, 1856, Horace Smith and Daniel B. Wesson signed an agreement for the exclusive use of the Rollin White Patent at a rate of 25 cents for every revolver. Smith & Wesson began production late in 1857, and enjoyed years of exclusive production of rear-loading cartridge revolvers in America due to their association with Rollin White, who held the patent and vigorously defended it against any perceived i.... Discover the Tara Dixon Engel popular books. Find the top 100 most popular Tara Dixon Engel books.