It's a legit, CPVC'd SS2 with it's secret barrel and system still intact.
Or is it? Let's look inside.
What's that? That does NOT look like a SS2 tank.
As far as I can tell (or am concerned), the leaky SS2 tank was basically toast. I have it sitting around still, and eventually I'll work on it some; failing that, I'll open the tank and take pictures. But here's what I've done in the mean time.
The SS2 has an awesome case, an awesome gimmick, and a great pump. It's downside was a leaky tank system that often left units unusable. The AT2K has a much more reliable tank system and still has a bunch of power, but the entire gun feels downsized and uncomfortable, and lacks a good point of reference for aiming. I set out to remedy the problems of both guns.
I had an AT2K tank around from a previous project and decided to bust it out when I gave up on the SS2 tank. The 2K takes up significantly less space inside the case which gave me plenty of room to work out a trigger mechanism and secret-barrel-retention system. I used the Secretbags 2 as a starting point, looking at what he did for inspiration. Unfortunately, CPVC is a much worse material for this mechanic, so I got creative with the dremel and 1/2" PVC to nest stuff in. This is a work in progress (the trigger mechanism hasn't been finalized since I don't have proper wire to wire it up) so I'm also working on a better barreling system before I get some brass or something.
I had to dremel out very little of the case to get the 2K tank with PVC attachment to fit where the SS2 tank ended and glued it in place. I also cut the end off the stock barrel and placed a dremeled-out (OD and ID) piece of PVC to help guide the CPVC and seal against the secret barrel.
I also had to add a check valve (purchased from McMaster) to the system; it appears as if the check valve, the backpressure release system, and the actual firing air are all contained in the SS2's tank.
After plugging the pump, I connected everything and threaded the tubing underneath the SS2's trigger. I dremeled off a few bits of the secret barrel lock so it would still move and fit against the PVC and 2K tank but nowhere near enough to make it structurally unsound. I glued a small compression spring to the trigger since there isn't one attched to the trigger itself on the SS2; the return mech is, once again, on the airtank. The wiring will be glued to the firing pin, threaded underneath the flat screw directly behind it, and glued to the SS2's trigger.
I was able to range test with my six-inch CPVC barrel, but I had to pull the 2K's pin manually; it shot at least seventy feet at three pumps, which lends itself to a great ROF for the gun once I get the trigger hooked up. I should be able to hit up Ace (or pilfer from my physics lab) and finish the gun by this weekend by wiring up the trigger.
