I was in my local gun shop yesterday and they had a new 590A1 in stock. I was going to buy in but I noticed rust on the inside of the muzzle. Looking further I found surface rust coating the chamber. Has anyone had problems with rust on thier Mossbergs or was this an isolated incident? It is a trusted gun shop so I know they are not trying to pass off a used gun as new. Sent from my iPhone using Tapatalk Wanna kill these ads? We can help!