Grenades are explosive devices typically used in warfare to cause damage to enemy personnel and equipment. They are designed to be thrown by hand or launched from a grenade launcher, and come in a variety of types, including fragmentation, concussion, and smoke grenades.
Due to their destructive nature, grenades are strictly regulated in most countries and can only be purchased legally by authorized individuals or organizations. In the United States, for example, grenades are classified as Title II weapons under the National Firearms Act (NFA) and require a special license from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) to purchase or possess.