Caustolance- Starfinder

Caustolance from Starfinder.
"Drawing upon the same design and inspirations as the caustoject, this larger weapon is designed to resemble an assault rifle rather than a pistol. As with its smaller cousin, a caustolance uses its battery to generate an acidic field to inject directly into its targets, but it can also handle and discharge other substances that are poured into a special tank that is attached to the weapon’s barrel."- Character Operations Manual pg. 123