This is a 12 GA Mossberg model 500 ATP, basically an early 590. It has a 20" bbl, 7 round magazine tube, and factory ghost ring sights ([b]great[/b] for quick target acquisition). Also installed are a Side Saddle shell carrier (which holds 6 rounds) and a padded sling (which hold 10 rounds).
A 590 with ghost ring sights goes for $400 new + $25 for the sidesaddle = $425. I'll take $240 + actual shipping. 3% paypal fee. I prefer an in-state (Ohio) sale, but will ship out of state to your FFL.
Thanks for looking!