Personally, I think the bullet damage can be reduced to something like 21/projectile. It will still be a bit more powerful damage wise than most SMGs, save the Tampa, but it wont kill a Heavy near instantaneously at mid range (or any other lighter body type). Also, I think the Tampa can get a bit more love if it becomes the highest hitting SMG, but at least it balances out with a high bullet spread.
What do you guys think should be changed to the CARB-9 in a fair tweak.