SpudFiles

The chamber is a propel bottle, the barrel is 2.5' long, its a tube that is used to store airsoft barells (Systema barells), the ignition is a lantern sparker, and the fuel is Butane. The main ammo I use in this gun is thumb tacks since they fit the barrel perfectly. It has good power for its size (can easily drive tacks into the wall from 30' away).
Any way here are some pictures:
http://i22.photobucket.com/albums/b321/ ... ion002.jpg

http://i22.photobucket.com/albums/b321/ ... ion003.jpg

Has it melted? Usually a coke bottle will melt if used as a chamber...
Anyway, nice mini, but where do you get butane? I've looked around a little and never came across any.

No it hasn't melted, it does get a little warm when I fire it though. I got the butane from Walmart in the camping section next to the lighters.

WALMART!! Geez I was too stupid to look there lol. So how much is a good amount of butane for an average-size comby (3'' chamber)