That looks really cool. Nice model and texture work... very convincing and sharp result. Can't wait to see more! :) You looking for work at the moment?
IMO, some of the shadows are too sharp, ie. the beam-ish thing on the right in the 2nd render. I'd make the shadows darker, but that's more of a personal thing.
Haha, I can't belive I didn't see that. The back of the grip had enough geometry and then there was a very sharp curve to the side. Thanks for the help :)
My only gripe is the graffiti it seems to new compared to the concept art. In yours it looks sharp while the concept it blends some more into the wall.