Originally Posted by Millslane

I'm changing directions here and going to offer some slightly different advice.

While a good barrel, stabilizer and all that stuff will help, most people loose accuracy when going full auto no matter what, more so when shooting a tippmann.

They are clunky and there is a little kick in them, when you go pull auto, the marker moves more than you realize, thats where your inaccuracy comes from. I'm afarid that if you spend $200 o new parts, install them and go play, you won't notice any difference and come back asking what happened.

All it takes it the barrel to move a 1/2 inch left, right, up or down and over the distance of 100 feet, its going to look like its inaccurate when really, you are unable to hold your marker steady.

Thats why its ful auto though, accuracy by volume right?

As far as the drop off, its possible that your tank reg cannot keep up. I would go to a local shop and ask it you can test one of their spare tanks to see that corrects that problem.