First off, disassemble the gun and take out the turret. Look at the back and turn the turret until the hole in the back of the turret line up with the screws holding the black turret divider in. Unscrew those, keeping the screws separate from the rest. Pull off the black piece.
Now remove the stock barrels.
Take each stock barrel, and cut that little nub on the bottom that's super glued on.
Here is the barrel with the piece I was cutting earlier removed. As you can see, it really is just a tiny sliver.
Now widen the base of each stock barrel until it accommodates Petg snugly. I used some big ass rusty scissors, and sandpaper rapped around plastic piping. I advise to not use a dremel here, as you want the inside of the stock barrel to still be a perfect circle.
After you have done everything above to all 4 stock barrels, it's time to deal with the new Petg barrels. Cut 4 barrels, 9 inches each (this changes depending on dart fit). Wrap e-tap around the base of each barrels until it fits sort of snugly but loosely in the stock barrel stubs. They need to have wiggle room, because the barrel stubs are all slightly slanted inwards, but when the stock barrels are connected on top of them, they are perfectly perpendicular to the turret base. Now you're probably starting to see why I chose to use the stock barrels. So when this is all done, the Petg will be perfectly alligned with the stock barrels, but not with the slanted barrels stubs.
Okay, now take off that e-tape you just put on, and hang it somewhere where nothing will fuck it up. We just put it in earlier to see how much was needed. You could really do the previous step later, but I screwed up and did it first. It really doesn't matter which way you do it, but this write up documents what I did to the gun.
Now wrap some e-tape around the Petg in the same spot as in the following picture. This needs to be able to fit in the upper part of the stock barrel (we widened the bottom earlier, but the top is top is too wide in diameter to fit the Petg snugly).
And test fit it.
Okay, now with the Petg inserted, wrap a piece of the e-tape we took of earlier onto the same place it was before. Now you see why I had to take off that piece in the first plae. With it on, there's no way to slide the Petg into the stock barrel because of the other piece of e-tape.
Now put the whole barrel assembly into one of the barrel stubs. Do not glue it yet.
3 more to go.
Finally, all 4 done!
Now put the black divider back on, you don't have to screw it in. Look at the top of the barrels. Are they in a near perfect square? Look at them from the side. Are they straight? If your answer to either of these questions is no, the take off the black divider, take out the barrel assemblies and put them into different stubs. Then, put the divider back on and check them again. Keep doing this until your answers to the two previous questions is yes. I think the reason they aren't straight the first time is because I didn't keep track of what stock barrel originally went in which stock barrel. Color coding everything could help the barrel be straight on the first try, but I'm not certain.
This is as close to perfect as I got.
Once you finally get them perfect enough, take the divider off once again and begin individually gooping (your goona want a good seal) the barrel assemblies in. Screw the barrel divider back on and your almost set. Now take a piece of 1/2" PVC and glue it in between the barrels at the top. My barrels were alrighty pretty damn straight, so I also did this for stability. It may push ot your Petg ever so slighty, but don't worrk about it. It isn't enough of a difference to make the dart drop.
I also wrapped in very lightly in e-tape.
Warning in regards to the previous step:
Anyway, about that ring of Pvc at the ends of your barrels. I recommend against it. It would be fine if you had a rigid barrel material, but the petg will slightly deform. What it will usually do is just oval out slightly, and what that does is squish the dart right at the end, slowing it down, and often hurting accuracy. You may not have e-taped it very tightly, so you may or may not be seeing these effects, but I just thought anyone reading this should know that bit of info. Try it without the ring there.
I just removed the PVC ring for fear of deformation. I think I'll wrap a piece of CPVC with e-tape until it has a good fit between the barrels, and then I'll goop (so I can remove it with a knife if I need to) that in.
In other words, don't use a divider so big that it will put stress on the Petg!
Finally, you finished the turret!
I aslo wrapped e-tape around the stock barrels, except here I did it really tightly to keep them perfectly in place.
Now just plug the pump, hot glue the valve opening spring (or else the gun won't fire half of the time), and you have a beast. Don't pump it more than 4 times.
Edited by TantumBull, 18 December 2008 - 03:06 PM.