I've never seen one come from the factory with a barrel that was obviously bent looking when you looked down it like the photos show. I've seen plenty that were bent by the owner. Accidents do happen. It is usually fairly easy to correct when an aftermarket problem. I'd send back a new rifle with that problem.
The tricky ones are bent looking on the inside and straight looking on the outside. I never wanted a rifle barrel that had more metal on one side than it did on the other and just usually replaced the barrel on those.