Krieghoff Titanium regular length trigger, used for two rounds of trap, was not the feeling that I cared for. I prefer the old smooth style trigger. The Krieghoff site says not suitable for self-installation, requires fitting by qualified gunsmith. However in my opinion if you have a screwdriver that fits the trigger guard screw and the Allen wrench that fits trigger adjustments, and if you have ever adjusted trigger for Lop you can probably figure out how this goes on. Slipped right off the back and then on my 2016 gun. New 330.00........ this one is 280.00 and I pay shipping to your door. PM me if you have any questions on this. l.g.