A model like this can not be build right out of the box. Both heavy weapons are usually held in the right hand. I switched one weapon so that he's holding one on each side.

Another possibility (one that I only realized after the model was finished) would be to put one or both weapons under the carpace like the big Armorcast models. Maybe I am doing this with the next model. I guess that I would trade this painted model agains two unpainted ones (or an equivalent amount of money).

In the game this model works quite well. The two weapons are strong enough. However I would propose that you give is also some protective biomorph.