I wouldn't paint GunsAmerica with such a broad brush. I just got my hands on an LE trade-in Colt 6520 that is actually in better condition than the vendor's photos would suggest.
https://www.gunsamerica.com/90491460...FIRE-M500A.htm
I haven't shot it yet, but if appearances mean anything it couldn't have fired more than a few hundred rounds. I would have never ever found that rifle except on an internet gun site. You just have to do your homework and stick to vendors with a lot of positive and very little negative feedback.