After a half hour of working out the screws with a flat head, here are the internals:

By the plunger rod is the 2 piece plunger head with a little white clip on lock thing.
You can see in this picture that the gun comes stock with two trigger springs. You can also see the trigger switch for the light.

In order to make the seal perfect, I used that second piece of the stock plunger head, but reversed it, in conjunction with a plunger head from a Manta Ray. I trimmed down the top half inch or so from the Manta head. I then wrapped it in e-tape until it was very tight.

There are no ARs in this blaster, and there is already a wire stopping darts from loading into the plunger tube. I cut off the front of the barrel right after the last support ring so that I could goop my 4" petg barrel in. This seems to be the ideal size of all of the lengths that I use.
The springs are a cut down first generation Firefly spring, and the stock spring nested inside to reduce rattling around. These have to be seriously cut down because there is not much room for the compressed springs.
So little room, in fact, that I cut back the catch just a bit, as seen here:

And here it is all closed up:

I replaced all of the screws with Phillips head screws naturally.
It vacuum loads (have you guys noticed that I love this feature? it makes ROF so insane) and shoots about 50 to 55 feet flat on average with my "good darts" (3/0 weights, forsaken's foam, made with my method in the smithing tips thread). These ranges are not exaggerated. This gun could be bungeed if you wanted. The plunger rod is pretty strong, and there is a gap at the front between the shell and barrel where they would clip nicely. It's very accurate. At 25 feet I can hit a 1" wide metal pole consistently.
This makes for a great loaner pistol, or just fun shooting around. I have some crazy cosmetics planned for this guy.
Edited by Splitlip, 04 September 2008 - 09:46 PM.