The model looks pretty good, better than a lot of models I've been seeing lately on this board.
You have some strange mesh in some areas (Mainly some parts looking a bit too organic for their own good). Also the scope, while very cool, is a bit too wide. (I think, although for all I know, that might be the way the gun actually looks, it just sort of stood out for me.
Also you have a tiny bit of areas that you probably didn't need to detail as much.
But overall good job man.
Alucard94, the member of the future of the past.