PT Enforcer upgrades?

[Cyclone]

What are some Enforcer upgrades? I just got two of them and want to try to make it so I don't have to use 12-grams. Is there a way to put a bottom-line on them?
Thanks,
Josh

[Avery]

If you use a remote (not an on gun tank) then I have an upgrade for you. Check out http://www.pbnation.com/showthread.php?s=&threadid=69551