I was just thinking today and I have both an airsoft gun, and obviously a paintball marker. I was thinking, if a marker could use the same motor in the grip/gear set technology to fire paint. The only thing that needs to be incorporated in is the aid of HPA. I am going to go into research mode and tool around with some internal designs. Where could I find info about regs? I also will be accepting some body designs if you guys would like to post some in here. Maybe I could make a couple if they are successful! Let me know what you guys think.
How an AEG Airsoft gun works
Also note the motor would be a traditional motor type you would find in a hopper or cd player but strong like bull