I can't think of anything a shotgun does better than an AR. AR has, less recoil, more rounds, easier reloads, "devastating" terminal performance at 0 yards, devastating terminal performance at 300 yards, much more accurate, will penetrate soft armor, and easier to operate than the typical shotgun.
Sure a shotgun is going to get you by in most home defense cases but if you're going to keep a long gun handy the AR will handle all those cases and most other potential scenarios that could arise.
Sure a shotgun is going to get you by in most home defense cases but if you're going to keep a long gun handy the AR will handle all those cases and most other potential scenarios that could arise.