XS-23 Fluid-Dynamic Piston Rifle

The XS-23 Fluid-Dynamic Piston Rifle, often known simply as the XS-23 or the Piston Rifle, was a type of firearm produced on Xia. It was tailored for use by Skakdi of fluid Elements.

Description
The XS-23 was created to be used by Skakdi of fluid Elements, typically Water, Air, or Plasma. It allowed one to use their Elemental abilities without the aid of another of their kind by channeling the substance they control into the weapon and firing it in a pressurized jet.

XS-23 models needed to be tailored to function properly with the Element they were to channel. This resulted in the creation of the Hydraulic, Pneumatic, and Ion-Pneumatic variations of the weapon, which are designed for Water, Air, and Plasma, respectively.

Trivia

 * The XS-23, specifically it's ability to allow a Skakdi to use their Elemental abilities without aid, was inspired by Vezok's Water Harpoon.
 * ChineseLegolas came up with the term Ion-Pneumatic to describe a system driven by plasma.