Here's my One-Pump 3k. It's a single barrel AT3K that has a full tank after one pump, and still gets 70' range on average. This is also with an un-plugged pump.
The mod is very simple, really. First, I removed that stupid goo tube, and covered the spot where it used to be with JB weld.
Here's the main part of the mod. Take both halves of the pump handle, and dremel off the front screw post on both halves. When the gun is put back together, the pump should extend out this far:
This is a little wobbly, but it is still stable with only one screw.
Now you're done. If your pump is plugged, it may take 2-3 pumps, but if it's not, it's full after one pump.
To complete the mod, I singled it. I used a 17/32 brass/ 1/2" PVC barrel
EDIT: It's time to fix this fucking mistake.
When I did this mod, I had already singled the gun and removed the turret rotation tab. So when I increased the pump-stroke length, I didn't think about it. You must remove the turret rotation tab for this mod to work. So basically this mod is only for singled 3k's.
I apologize for not making this all clear in the first place.
Edited by AssassinNF, 11 April 2009 - 04:27 PM.