The specs:
40mm chamber 2 feet long
Hunter sprinkler valve(modified)
20mm barrel
blowgun configuration
adjustible stock
classic duck taped handle
bike tube filling valve
pressure gauge(removible)
The chamber has two elbows one the end and that allows the sprinkler valver and the barrel to be on top of it (U bend). Although it might look like the T piece for the handle is linked to the chamber it isn't, the inside was filed down to slip over the chamber, this was done after I glued the chamber, thats why you can see a link on the chamber just in front of it. The filling valve connects into the chamber on the inside of the 'U bend'. I added an adjustible stock from a bb gun onto the back(it has all the whieghts removed) to make it look better and feel better.
(No Rambo this is not my paintball gun that I was talking about

Feel free to ask about anything.
(special thanks to Benny for help and support)
ps:I loaded my thumbnail but nothing happened