Toy guns are using jelly texture bullets nowadays to reduce danger. It reminds me that playground equipment are less excitement and entertainment when people tried to keep it save. No matter now or then, the only reason of accident happening is incorrect usage. Toys are too save and boring now. I can at least learn something from old toys like behave myself and take responsibility. Guns are symbol of danger but they are children's favorite toys. I am not trying make something dangerous. I try to use guns as tool for graffiti. And it can be wash away by rain and leave no marks. I used gas gun at first but it cannot shoot ceramics bullets. Ball bullets have size and weight limit to prevent people transform gas guns as weapons. Handmade ceramics bullets cannot get the same weight even though the size is the same. I tried crystal bullet gun too. But the low water pressure cannot push the ceramics bullets. Finally I found a 70's toy gun that fit with ceramics bullets. But it still hard to work as a paintbrush.