Assault rifles are a type of firearm designed for rapid fire and versatility. They typically use an intermediate cartridge, allowing for both semi-automatic and fully automatic firing modes. Common examples include the AR-15 and AK-47, which are often used by military and law enforcement. These rifles are characterized by features such as detachable magazines and adjustable sights, making them adaptable for various shooting situations. While they are popular among some civilian gun owners, their use and regulation can be controversial, especially in discussions about gun violence and public safety.