SpudFiles

This is a tiny combustion that I made out of spare parts. And well It sucks. ALOT. Its fun to shoot but will barely make it across my yard. Im going to cut it up and use the pipe for a very small pneumatic. ( 1/2 inch chamber thats 4 inches long) Well heres some pics of the pos:

what size is the barrel if the chamber is 1/2 inch? or is the chamber like 1 inch or 1.5 inch, and the barrel 1/2 inch?

The barrel Will be 6 inches of bb gun barrel. Its going to be a coaxile.