I have had that exact gun for 3-4 years and it has been great. The finish is a bit rough but mechanically mine has been a 100% reliable beast of a gun from day one, and any roughness in the action smooths out nicely over time. 6 shells of PDX1 12GA in mine in my closet right now.
Enjoy it! While Mossberg 500/590 is a great pump gun too, I'll take an 870 any day.