I bought the HD, then replaced the barrel with the 18" rifle sighted police model for $145. Someone mentioned that the police model has been given extra quality assurance steps, but this seems moot on the 870 (and the police barrel doesn't seem as nice cosmetically-- some parts aren't parkerized and the brazing is visible). The trigger guard is aluminum on the police, but this should wear worse than polymer (like the handle of a benchmade knife-- always scratching the finish off). This leaves removing the dimples ($25) and putting on the nicer (and flush with the barrel) scattergun extension ($40-45). This should bring you in about equal $wise, but with a nicer look and w/o the hassel of having to look for a dealer that sells to civilians.