Concept

Automatic rifle

An automatic rifle is a type of autoloading rifle that is capable of fully automatic fire. Automatic rifles are generally select-fire weapons capable of firing in semi-automatic and automatic firing modes (some automatic rifles are capable of burst-fire as well). Automatic rifles are distinguished from semi-automatic rifles in their ability to fire more than one shot in succession once the trigger is pulled. Most automatic rifles are further subcategorized as battle rifles or assault rifles. In June 1883 Hiram Maxim filed his first patent to do with automatic firearms covering semi-automatic and fully automatic Winchester and Martini-Henry rifles as well as an original automatic rifle and blowback- and recoil-operated machine guns, both single and multi-barrelled. In 1885 Ferdinand Mannlicher made an experimental self-loader based on work begun in 1883 in both semi-automatic and fully automatic modes. It was an impractical failure due to fouling by its black powder ammunition, but it influenced later designs. Furthermore, Mannlicher produced smokeless powder automatic rifles from the early 1890s onwards until his death in 1904. One of the world's first automatic rifles was the Italian Cei-Rigotti. This rifle started out as an 1886 gas-operated conversion of the Vetterli rifle, which received positive approval and was even adopted after further refinements in 1895 for the Royal Italian Navy but although up to 2000 rifles were ordered for as yet unknown reasons the order never came through. Another version of the Cei-Rigotti was presented in 1900, these 6.5mm Carcano or 7.65×53mm gas-operated, selective-fire carbines attracted considerable attention at the time. They used 10-, 20- and 50-round box magazines. The Cei-Rigotti had several failings, including frequent jams and erratic shooting. In the end, no Army took an interest in the design and the rifle was abandoned before it could be further developed. Although the rifle was never officially adopted by any military, aside from the 1895 variant which never came through, it was tested extensively by the Italian Army during the lead-up to the First World War.

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Related concepts (21)
Magazine (firearms)
A magazine, or simply called mag, is an ammunition storage and feeding device for a repeating firearm, either integral within the gun (internal/fixed magazine) or externally attached (detachable magazine). The magazine functions by holding several cartridges within itself and sequentially pushing each one into a position where it may be readily loaded into the barrel chamber by the firearm's moving action.
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A battle rifle is a service rifle chambered to fire a fully powered cartridge. The term "battle rifle" is a retronym created largely out of a need to better differentiate the intermediate-powered assault rifles (e.g. the StG-44, AK-47, M16, AUG) from full-powered rifles (e.g. the FG-42, AVS-36, FN FAL, and M14, as well as the H&K G3 outside of sniping uses) as both classes of modern firearms have a similar appearance and share many of the same features such as detachable magazines, pistol grips, separate upper and lower receivers etc.
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Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. This can be influenced by several factors, including operator training level, mechanical limitations, ammunition availability, and weapon condition. In modern weaponry, it is usually measured in rounds per minute (RPM or round/min) or rounds per second (RPS or round/s). There are three different measurements for the rate of fire: cyclic, sustained, and rapid.
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