After 27 years ( now retired ) of law enforcement, I am very familiar with the good ole 870's. We always had 870s, sometimes a 1300 in our units. I am not real familar with the Mossberg 590. I have a chance the purchase either an old 870 police trade in or a Mossberg 590 police trade in for the same price. Both have extended tubes, and show heavy wear ( likely from riding in a trunk for years)..I was just wanting to see if I should break tradition and try something different from the 870s...????