A grenade launcher is a firearm designed to launch grenades in a high-arc trajectory. It can be a standalone weapon or an attachment to a rifle, allowing soldiers to engage targets at a distance. Grenade launchers are typically used in military operations for their ability to deliver explosive projectiles to enemy positions without direct line of sight. These weapons can fire various types of grenades, including high-explosive, smoke, and illumination rounds. Common models include the M203 and M320, which are often used by armed forces around the world. The versatility and effectiveness of grenade launchers make them valuable tools in combat situations.