I haven't seen an 870 police tactical in a store. I've had 2 gun shops look up 870 tacticals and they have all been just 870 tacticals that come with a standard stock, knoxx AR style, knoxx folding stock. What is different about the 870 police and how much more is it? Is it worth it to try to find a police model? I want to use this for possible skeet, deer hunting, and home defense. HD would be it's primary purpose as I already have a mossberg 500 which will work find for the other things, but I want a backup If it is more durable how much more durable and are they things that are easily change or upgraded on the regular tacticals?