Rifles I have used teaching CFSC end up having issues due to being man handled. Its most often the magazines that give up first. Savage DBM magazines invariably fail, break, stop feeding well. Have had a rear gas baffle fall off a friend's savage in the field. Any rifle can fail (saw a Sako Finnbear bolt guide rail slide forward and prevent the action from opening) but I think the cheap plastic magazines and bottom metal assemblies on budget guns will never last as long as steel assemblies with the same use when used heavily.
I say lets wait 50-60 years and see how the well-used Axis, 783, Ruger Americans are holding up. Most hunters don't use the their rifles as heavily as working guns used by PH's, guides, wildlife managers etc.