@ LMP + silvershrimp Thanks for the feedback. I'll do some research on materials in unity, and try to get some better material definition out of the spec.
Very nice! :) The spec is a bit too tinted, work on that a bit. (Try using a color that contrasts well with the brown / yellow, especially on the wood parts)
I really like the spec on that barrel, it was the first thing I noticed. It looks good, but a bit busy or at least lacking an area of particular interest.