[Marcello]

Game wise I think that weapon n.158 in the iraqi OOB would be a good fit. That would also avoid using up another weapon slot.


EDIT
In reality what type of ammunition has been purchased so far was not specified. For all that it is known they might have got BM-15 past their expiration date.
However they are purchasing additional T-72M/M1 from eastern countries with the goal of fully equipping a tank division (the others divisions would eventually get western tanks) and I would guess that the above gun would be the best candidate for the sort of ammo that would realistically be aquired.