As the name implies, a multifunctional fire water gun has multiple functions, mainly including straight stream, spray, and fog modes; the flow rate can also be adjusted to a suitable operating condition according to fire fighting situations. The rotary gun head can adjust between straight stream, spray, and fog modes. In addition, adjusting the flow rate and adjusting the spray mode via the rotary gun head are two separate functions but interact with each other. At the fire scene, firefighters can use a single multifunctional fire water gun to spray open flames with straight stream at a long distance, or use the spray mode to cool down a large area and purify smoke in the air without needing to switch guns. The manual pull switch facilitates opening and closing the water gun, and the gun is equipped with an anti-knotting interface, which can effectively prevent the gun from rotating along with the rotation of the hose caused by pulling.

The multifunctional fire water gun, also known as a recoilless fire water gun in China's fire-fighting industry, is designed to minimize recoil force as much as possible and prevent firefighters from being injured by recoil force.