Since the pictures aren't very good I can't really tell, but he looks pretty well put together. But wont be able to tell till new pictures are put up. I personally really like him, he's really handsome! :)
You didn't really have the proper pics for a critique but I can look at a horse & tell you if it's a "mutt" or a nice horse. This is a nice horse, and I can see his butt, it's nice, back looks ok, neck is very nice rest I'd be guessing.