[Source] The miniature proton torpedo launcher was a portable missile launcher that fired miniaturized proton torpedoes. It was originally designed as an integrated weapon for the Zero-G assault stormtroopers of the Galactic Empire. The launcher was fitted into the Zero-G stormtrooper's left gauntlet which enabled them to rip through the hull of a starship in boarding missions. However, Rebel engineers adapted the weapon into a portable shoulder-mounted launcher.