The Grenade Launcher is a heavy weapon that appeared in Grand Theft Auto V and Grand Theft Auto Online, manufactured in-fiction by Shrewsbury, and it is due to appear in Grand Theft Auto VI, having reportedly been glimpsed in the game's second trailer. The weapon was also planned for Grand Theft Auto: Vice City but was cut before release, leaving behind only unused model and texture files. Its prior appearances depict it as a compact, semi-automatic launcher holding up to ten rounds.
Weapon data via GTA Wiki (Fandom), CC BY-SA 3.0.