The MP5 submachine gun is the most well-known and globally widespread icon of the German Heckler & Koch arms manufacturer. Originally designed for the German special unit, GSG 9, the weapon quickly gained immense popularity. Its users include the FBI, special law enforcement units in most countries (including Hungary), as well as the British SAS and the American Navy SEALs. Over the years, many variants have been produced, and its shape is familiar to everyone from countless video games and movies.