I'm creating a new weapon, but I'm not sure exactly what the weapon model needs to have to be functional. I know it needs:
-A model (obviously)
-A texture
-And hardpoints.

Problem is, what hardpoints do i need? And is there anything else I'm missing?

the "XSI FAQ /tutorial"-thread is your friend: How to setup a weapon(gun)

WOAH thanks! I knew I'd seen that tut a while back, but I haven't been modding in forever and forget where to find it. Thanks!