This can be looted or bought in: Inkopolis square and plaza. Some can be found in underwater dungeon chests.

Splatling

Firearm "This weapon can only be used by Inklings and Octolings. This weapon is a martial ranged weapon." Common [None]

A brightly colored machine-gun-shaped water gun of sorts, which shoots out the PC's color of ink. It must charge up before firing, having two firing chambers. It takes one turn to charge it fully, and it will shoot for the duration of the PC's next turn. If it is charged halfway, it can be fired during the same turn and can also be canceled, where as the full charge cannot be canceled. It's ammunition comes from the ink tank held on the backs of the PC. The PC must wait in the in an x amount of rounds in ink to refill their tank, x being decided by the DM and dependent on how much of the tank they want to fill up. The splatling can shoot certain surfaces, and then the PC can swim through the ink on the ground. Here is a table of surfaces the splatling can ink.

Cost: 5gp Weight: 12lb