An automatic rifle is a type of firearm designed to fire bullets automatically with each pull of the trigger. This means that as long as there is ammunition in the magazine, the rifle will continue to fire until the trigger is released. Automatic rifles are typically used by military forces and law enforcement due to their rapid-fire capability and effectiveness in combat situations. These rifles often use intermediate cartridges, which provide a balance between recoil and firepower. Examples of automatic rifles include the AK-47 and the M16. They are distinct from semi-automatic rifles, which require a separate trigger pull for each shot fired.