Automatic rifle
Automatic rifle is a term generally used to describe a self-loading rifle chambered for a rifle cartridge, capable of delivering both semi- and fully automatic fire. This "select-fire" capability, as well as the (general) use of magazine-fed rifle ammunition, differentiate it from other classes of automatic firearm such as the machine gun and submachine gun.
In many cases, however, it simply describes a rifle capable of self-loading, but not capable of automatic fire (i.e., semiautomatic). Depending on the expert and point in history, fully-automatic carbines and assault rifles are sometimes considered to be a type of automatic rifle, and at other times separated into their own categories.
As an example of the confusion, or at least differences in usage, there are books which feature a section for automatic rifles listing several semi-automatic self-loading rifles, but not a single fully automatic weapon. On the other hand, soldiers of the United States Army carrying the M249 SAW are designated automatic riflemen, and the weapon itself an automatic rifle — even though it is a fully automatic firearm, normally classified as a squad automatic weapon (SAW) or light machine gun.
An "assault rifle" is a subclass of automatic rifle generally differentiated by the use of less-powerful rifle cartridges than the machine gun or battle rifle of the period, which allows an infantryman to control the recoil of the weapon in automatic fire without the use of a bipod or other mount. Such cartridges are known as "intermediate" cartridges. The Kalashnikov AK-47 assault rifle, for instance, commonly uses a 7.62x39mm round, with the same diameter bullet but smaller and less powerful cartridge when compared to the standard Soviet rifle bullet in use at the time of the AK-47's introduction, the 7.62x54mmR. In comparison, the U.S. M16A1 is chambered for the 5.56mm NATO round, a derivative of the .223 Remington civilian hunting cartridge and a less-powerful round than the 7.62x51mm NATO (.308 Winchester) cartridge used by its predecessor the M-14, and the 30-06 Springfield cartridge used by the M1 Garand and Springfield M1903. It is sometimes suggested that the fire-selector switch design can be used to differentiate an "assault rifle" from other classes of automatic rifle, however both the AK-47 and the M-16 are called "assault rifles" even though the first "off-safe" position of the fire selector is semi-automatic for an M-16 but fully automatic for an AK-47, so this supposition is false.
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History
The automatic rifle traces its roots to World War I, where the Browning (BAR) and Huot first appeared, to fulfill the function of the light machinegun in an infantry assault role;[1] only the Browning entered service.
Notes
- ↑ Hogg, Ian V., and Weeks, John. Military Small Arms of the 20th Century (London: Arms and Armour Press, 1977), p.180, "US Automatic Rifle, Caliber .30in M1918-M1922 (Brownings)".
Sources
- Hogg, Ian V., and Weeks, John. Military Small Arms of the 20th Century. London: Arms and Armour Press, 1977.
