The whole reasoning of this gun is his size. In real life, this guy would be massive, as in bigger than all the other movie transformers. If its any help just look at the cab! Anyway, his bio claims him to have a huge arsenal of weaponry, and I just couldn't take that seriously without something in his hands, and what's the most famous infantry weapon of destruction? The BFG minigun. Apart from the new gun I add some blast marks and put in some more chamoflauge.