I've been working on that gun for some time now and I really think I need comments and critiques to help me push it further. I tried to define my materials the best I could but I'm sure a freshlook on it would be a good thing for me.
For information, it's about 5500 tris with 2048 maps and it's based on Guido Kuip's
awesome concept.( I encourage you to visit the rest of his portfolio as there are some really nice things there).
Here it is.
And the textures.(Larger version HERE
As I said, I'd really want to improve it so please, be harsh.