Actually, Vintage, the SS2 uses a pressure-driven firing mechanism, sacrificing a little bit of pressure to release a second pressure store. There's a big difference between an SS2 valve and a linear valve, such as on a Supermaxx gun, in the same way there is a difference between Metalstorm and a traditional mechanical pistol.
I wasn't trying to get into details about how the gun works. I was just explaining how that just because a basic homemade has a tank, pump, trigger, and barrel, it isn't just a copy of another gun.
I guess the analogy could be made better with a homemade and a supermaxx.
Also, you're operating with a pressure-actuated breech in mind, right? Otherwise those darts aren't going anywhere. I'm pretty sure you know this, though, given your RF20 debate.
I actually didn't have a breech in mind for the pistol. I figured that if what Bobert says is true (that the gun has fairly slow ROF if the trigger is held) you would have enough time to pull-and-release the trigger before two air bursts escape.
So, Zero, you would pump the gun, load a dart, squeeze off a shot, load a dart, sqeeze off a shot, etc... until the tank is out of pressure.
By the way, by "pressure actuated breech," you mean a magazine that force-feeds the darts into the chamber with (for example) springs? If so, yes, that's what I have in mind for my other project.
Nice job Formerly Sane. It looks very nice. However, I dislike the tube coming out of the rear of the gun. Other than that, if you could possibly find the parts for it, it would be awesome.
You can get much further with a kind word and a gun than you can with a kind word alone