Grenades are a thrown fragmentation weapon that has appeared in every Grand Theft Auto game since the earliest 3D Universe titles, and they are due to appear in Grand Theft Auto VI. From Grand Theft Auto III through Vice City Stories the weapon kept a consistent form modeled closely on the real-world M67 grenade, with only cosmetic details like color and pattern shifting between games. No new design specifics have been confirmed for its Grand Theft Auto VI appearance.
Weapon data via GTA Wiki (Fandom), CC BY-SA 3.0.