I smell a troll.
But that is an unlockable weapon, it just uses the shotgun graphics.This doesnt say how to give non unlockable weapons attributes tho.
What purpose does your new shotgun serve though?
...im unclear how this helps offensive engies <_<
looks like it gives you less of an ability to kill people
Looks like he's trying to make the engineer more useful. A'la jarate/Natascha style.
I was gonna suggest a double barrel shotgun, but then it'd just be considered a version of FaN.
A gun that leaches ammo off enemies to increase your carried metal counter like a version of the medigun would be cool. But i guess not much use if you're only using a lvl1 sentry.