Automatic weapons are firearms that can fire multiple rounds continuously with a single pull of the trigger. They are designed to automatically reload after each shot, allowing for rapid fire. Common examples include machine guns and submachine guns, which are often used by military and law enforcement. These weapons are classified into two main categories: submachine guns, which fire pistol-caliber ammunition, and assault rifles, which can fire intermediate cartridges. Due to their high rate of fire, automatic weapons are subject to strict regulations in many countries to control their use and ownership.