The Energon Pub

I have a quick question, maybe this has been discussed before, I don't know. Is there a way to somehow get the Classics Megatron's arm cannon to be on top of his arm and look right with his fist, as in some sort of quick kit bash? I was just wondering. I hate that it's under his arm, the best I can get is for him to be holding out to his side. Thanks!

The best I can think of is switching the hands and then turning the arm around. But I don't know if that works, cos I've never tried.