Serial #? If before 7500 does it have the 10 o'clock screw? measure the bbl. If it is longer than 26" & has a set trigger, I would think the owner would have it lettered. I would want to know these things before buying. The bbl might clean out better to, but not uncommon for some corrosion in it. I think the $2400 is a good price if all checks out.