Grenade Launcher in GTA IV Era
The Grenade Launcher is a weapon available in the games The Lost and Damned through Grand Theft Auto VI. It fires grenades, but the grenades are different than the throwing kinds. In the GTA IV era when you fire it, it makes a "Pop!" sound, but in GTA V, it makes a different sound. It has a different model in GTA V and GTA VI.
Grenade Launcher in GTA V and GTA VI