I recently purchased a mossberg 500 from a co-worker. It came with two barrels: a 24" field barrel (modified), and the 18 1/2" security barrel (Synthetic Stock). I payed next to nothing for this firearm ($80). It's in very good condition. I figure I probably got a pretty good deal on this one, but have never owned a Mossberg before of any kind and was wondering what the appoximate value should be.