Automatic rifle
A man-portable firearm capable of continuous fire while the trigger is held, typically magazine-fed and often offering selective-fire modes for semi- and fully-automatic operation.
Overview
An automatic rifle is a shoulder-fired firearm that can continue to discharge rounds as long as the trigger remains depressed. In practical terms it cycles cartridge cases out and loads fresh rounds into the chamber without manual operation by the shooter. Many designs combine this continuous-fire ability with a single-shot mode, so a user can choose between rapid automatic fire and individual shots.
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How it works
Automatic rifles achieve repeat firing by using the energy of each fired cartridge to extract the spent case, eject it and feed a new cartridge from a supply. This cycle is performed by a mechanical action powered by recoil, gas pressure, or a blowback system. Ammunition is usually supplied from a detachable magazine, and spent casings are ejected while fresh cartridges are chambered for the next discharge at the same or a higher rate.
Common characteristics
- Selective-fire capability: many rifles offer both semi-automatic and fully automatic modes, often called selective fire.
- Rifle-caliber ammunition: automatic rifles typically fire full-power rifle cartridges rather than pistol rounds.
- Magazine feeding: detachable box magazines are common, providing compact ammunition supply compared with belt-fed weapons.
- Manual controls: safety, fire-selector and magazine release are standard features.
History and development
Early attempts to produce self-loading rifles date to the late 19th and early 20th centuries. Designs diverged between weapons intended for aimed, individual fire and those built to deliver suppressive or sustained fire for small units. Some early military automatic rifles were adapted into squad-support roles; later developments emphasized controllable bursts and lighter weight so the weapon could be carried and used by one soldier.
Uses and roles
Automatic rifles are employed where a balance is needed between portability and firepower. They serve as general infantry weapons, support arms for small teams, and are used in some law-enforcement and security roles. Their capacity for rapid fire makes them suitable for close combat and defensive situations, but sustained automatic fire is limited by heat buildup and ammunition supply.
Distinctions and related types
Automatic rifles differ from several other categories of firearms. They are not the same as a machine gun, which is often heavier, capable of prolonged belt-fed fire and intended for sustained suppressive use. They also are distinct from a submachine gun, which fires pistol-caliber cartridges and is optimized for short-range engagements. The term overlaps with "assault rifle" and "battle rifle" in casual usage; strict distinctions depend on cartridge power, select-fire capability and doctrinal role.
For further technical definitions and historical examples consult specialist sources or armament references: see entries on ammunition and chambering (chamber), firing mechanisms (fired bullets), and related firing modes like semi-automatic operation.
Additional reading and comparative articles are available through general firearms overviews and defense-technology summaries (selective fire, magazine, machine gun, submachine gun).
Questions and answers
Q: What is an automatic rifle?
A: An automatic rifle is a rifle that continuously fires a bullet as long as the trigger is pressed.
Q: Are cartridge shells ejected and new ones loaded into the chamber automatically in an automatic rifle?
A: Yes, cartridge shells are ejected and new cartridges are loaded into the chamber automatically in an automatic rifle.
Q: What is selective fire in an automatic rifle?
A: Selective fire in an automatic rifle refers to the ability to switch between semi-automatic and fully automatic firing modes.
Q: How do automatic rifles rifle bullets?
A: Automatic rifles rifle bullets from a magazine.
Q: How are automatic rifles different from machine guns and submachine guns?
A: Automatic rifles are different from machine guns and submachine guns because they have both semi-automatic and fully automatic firing modes, they rifle bullets from a magazine, and they do not have as high of a rate of fire as machine guns.
Q: Can automatic rifles only fire fully automatic, or can they fire semi-automatic as well?
A: Most automatic rifles are designed to give both semi- and fully automatic fire.
Q: What is the main difference between automatic rifles and other automatic firearms like machine guns and submachine guns?
A: The main difference between automatic rifles and other automatic firearms like machine guns and submachine guns is that automatic rifles have a selective fire option and they rifle bullets from a magazine.
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