has been using them since the beginning. they even still check out some of the original 870s as they work great to this day. they use short barrel and shoot slugs. (short barrel is preferred for maneuverability through doors and halls w/ slugs rather than spread). I have owned many shotguns and love my 870 I keep a short barrel at home and switch it to my hunting barrel when I take it hunting. Super easy to switch take about 60 seconds