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Lever action is a type of firearm action which uses a lever located around the trigger guard area (often including the trigger guard itself) to load fresh cartridges into the chamber of the barrel when the lever is worked. This contrasts to bolt-action, semi-automatic, or selective-fire weapons. Most lever-action firearms are rifles, but some lever-action shotguns and a few pistols have also been made. One of the most famous lever-action firearms is the Winchester Model 1873 rifle, but many manufacturers—notably Marlin and Savage—also produce lever-action rifles. Mossberg produces the 464 in centerfire .30-30 and rimfire .22. While the term ''lever-action'' generally implies a repeating firearm, it is also sometimes (and incorrectly) applied to a variety of single-shot, or falling-block actions that use a lever for cycling, such as the Martini–Henry or the Ruger No. 1. ==History== The first significant lever-action design was the Spencer repeating rifle, a magazine-fed lever-operated breech-loading rifle designed by Christopher Spencer in 1860. It was fed from a removable seven-round tube magazine, enabling the rounds to be fired one after another, and which, when emptied, could be exchanged for another. Over 20,000 were made, and it was adopted by the United States and used during the American Civil War, marking the first adoption of a removable-magazine-fed infantry-and-cavalry rifle by any country. Unlike later designs, the early Spencer's lever only served to unlock the falling-block action and load a new cartridge from the magazine; it did not cock the hammer, and thus the hammer had to be cocked after the lever was operated to prepare the rifle to fire. The Henry rifle, invented by Benjamin Tyler Henry, a gunsmith employed by Oliver Winchester in 1860, used a centrally located hammer, rather than the offset hammer typical of muzzleloading rifles, and this hammer was cocked by the rearward movement of the Henry's bolt. The Henry also placed the magazine under the barrel, rather than in the butt-stock, a trend followed by most tubular magazines since. The Martini–Henry rifle was the main rifle of British and Empire forces from the early 1870s to the turn of the 20th century and remained in use to the end of World War I. It was used in some areas, either by civilians or by the local military, much longer. Variants copying the Martini–Henry mechanism but using more modern cartridges were also produced; as late as the 1970s a version taking the common Enfield .303 ammunition was common in Afghanistan. John Marlin, founder of Marlin Firearms Company, New Haven, Connecticut, introduced Marlin's first lever-action repeating rifle as the Model 1881. This was chambered in rounds such as the 45/70 and 38/55. Its successor was the 1895 solid top design, which we know as the model 336 today. It also gave rise to the Marlin Model 1894, which is still in production today. By the 1890s, lever-actions had evolved into a form that would last for over a century. Both Marlin and Winchester released new model lever-action rifles in 1894. The Marlin rifle is still in production, whereas production of the Winchester 94 ceased in 2006. While externally similar, the Marlin and Winchester rifles are quite different internally; the Marlin has a single-stage lever action, while the Winchester has a double-stage lever. The double-stage action is easily seen when the Winchester's lever is operated, as first the entire trigger group drops down, unlocking the bolt, and then the bolt is moved rearward to eject the fired cartridge. The fledgling Savage Arms Company became well known after the development of its popular hammerless Models 1895 and 1899 (which became named the Model 99) lever-action sporting rifles. The Models 1899/99 were produced from introduction in 1899 until the expense of producing the rifle, and declining interest in lever-action rifles from the 1950s on, resulted in dropping the Model 99 from production in 2000. Unlike most Winchester and the Marlin lever-action rifles, which used a tubular magazine requiring round-nose or flat-nose bullets, Arthur Savage designed his rifle using a rotary magazine. This allowed the 99 to use cartridges with spitzer pointed bullets for increased ballistic performance. The 99 was produced in many different cartridges and several different model variations. The final models eliminated the very expensive-to-produce rotary magazine, using a detachable box magazine instead. But the 99 was still very expensive to produce when compared to the other lever-action rifles, and the Savage bolt-action rifles and economics determined the fate of the rifle. More recently, Sturm Ruger and Company introduced a number of new lever-action designs in the 1990s, unusual because most lever action designs date from before World War II, in the period before reliable semi-automatic rifles became widely available. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lever action」の詳細全文を読む スポンサード リンク
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