This 3D-printed manual water gun features practical design in every detail:
 Non-slip grip: The pink handle with wave-shaped grooves prevents slipping even when wet, ensuring comfortable use during prolonged handling.

One-piece body: The smooth, light-white barrel minimizes gaps, reducing the likelihood of leaks and delivering a compact, durable structure.

Passive operation: A purely manual pull‑type mechanism relies on the seal between the piston and the barrel to draw in water and propel it outward—no electronic components, making it easy to maintain and environmentally friendly.
The assembly process is straightforward; two O-ring grooves are provided, but testing shows that installing just one is sufficient—adding a second can cause the parts to jam.