Well, I think it's close enough for now, meaning I can't come up with any suggestions for improvement in its shape
However, the texture could use some lighting up, it's almost pitch black, whereas the original has a kind of a blue tint to it. Pretty close to the combine blue metal, actually, just smoother and warmer.
By the way, I'd prefer to have the raw files so that I can make quick modifications to filenames and animations (for example), so if you could provide those, that'd be great.
But apart from those things, very good stuff. Thanks a lot for the effort