I built a butane powered spit wad gun. It shoots airsoft bbs too but that is just crazy. It shoots amazingly fast.
If anyone has an idea how to make tracer rounds for it just say
http://www.youtube.com/watch?v=2G0I3fOktck
If anyone has an idea how to make tracer rounds for it just say

http://www.youtube.com/watch?v=2G0I3fOktck
"DON'T TASE ME BRO!" lol