The topspin of a water gun is an element that stabilizes the water bomb. It is installed on the muzzle of the gun. If the trajectory of the water bomb is twisted, it will be corrected by it, which has the effect. to slightly increase the range.
The water gun is a toy gun that claims to be made of "water" bullets. It is an electric toy gun that can fire continuously and requires assembly. Toy gun bullets are not water, but a water compound containing a cross-linked copolymer of sodium polyacrylate. Small particles the size of a needle tip will turn into blue particles the size of a pea after two hours of soaking in water. , and it will break into pieces if you squeeze it hard. After destructive testing, this topic became the center of discussion.