Berrettaman, I have several doubles including a German and a Spanish that came with a set of clips and a sling with clips to connect on each end. Also a Belgian double that has a retractable sling that pulls out of the stock and connects to the underside of the barrel. I sure like the slings also but, like Brent, absolutely love the doubles. Have several O/U's and pumps but no auto's. Only problem with my doubles is in the great rooster fields where shots come faster than I can reload even with two extra shells in between fingers on left hand.