I originally bought this gun off Coop, so credit for the idea goes to him, but he sold it to me broken, so I had to open it up and replace a bunch of stuff, and I pretty much re did everything excluding the airtank. Anyway, start by taking 1 1/2" PVC for the body of the gun, and cut it to your preferred length, which should be around 2 feet. Then, make a handle out of more 1 1/2" pvc, and secure it to the shell where ever you comfortably fit it. Now, take your dremel and make a large cut across the top of the shell, cutting away a foot long piece of PVC starting about 4 inches away from the front. Save the piece of PVC you have cut away from the shell, as it will be used again later.
Secured handel
The gap in the shell (this pic already has the tank installed, but ignore that for now)
Then, take your airtank, and secure a coupler to it, PVC or CPVC is fine. Next, fit it into the 4 inches you left uncut in the front of the shell. This may require enlarging the airtank for a snug fit, in which I would suggest you hot glue FBR around the tank, until you get that snug fit with the shell your looking for. Once this is done, goop in a piece of vinyl tubing about a foot long. Attach a strong wire a foot and a half long to the firing pin via wrapping it around tightly and applying hotglue. Once those steps are done, the inside of your gun should look like this.
Next, for the stock. Take your un-used 1 1/2" PVC and cut 6 inches from it. Use a dremel and cut out the top quarter of it. Then, glue it to the back of your gun, behind the handle. It should look like this.
Dremel out a space for tubing in the stock you have created, till it looks like this.
Then, take the pump your using, and wrap FBR around it (glued down) so it to will fit snugly in the shell.
Insert it in the back of your shell, and line up the tubing like so.
Drill a hole at the start of your stock, and feed the tubing from the pump through it. This should bring the tubing up to the tubing from the tank, with a good bit of room left over.
Edited by ice, 02 January 2009 - 12:12 PM.