Nitro Launcher

The Nitro Launcher was an explosive launcher weapon, first found on Veldin. It was best used against a large group of enemies, or vehicles, because of the damage it did to all surrounding foes. It was a bomb that exploded upon impact. At V5, the Nitro Launcher became the Nitro Eruptor. Ratchet was handed this over by the Galactic Rangers, to help destroy a large vehicle on the Kyzil Plateau of Veldin.

Nitro Eruptor
To Get the Nitro Eruptor you have to upgrade the Nitro Launcher 5X.

Stastics
Shoots out a Gadgetron Vion Nitro Bomb, that explodes with a blast radius hitting multiple enemies.