I said it was origionally going to be UIR but I started to think this is one of my best models(considering it has an interior) And then I thought This is way to nice to be UIR. It has 1 heavy cannon with dual barrels up in front and 4 "artillery" cannon bays/shuttle bays. The bays have blast doors which also function as air lock doors. I am not sure how many guns are in each of the bays but there are a lot. Credit to DE for the Bridge and the small cannons and Gunnerboy for the Blast doors..