Stan, my Beretta 20 was a special order Model 682 30" step rib trap gun made for the European market with a strong inertia system. It is the first and only step rib 20 gauge trap gun I have seen. Beretta USA fixed the trigger so it would reset with our weak 7/8 ounce target loads. I discovered the problem the first time I fired it. It has worked well for more than 40 years and is even fairly reliable with 2 1/2" .410s.