While the top levers won out, there is something about using other locking systems that is appealing to me. Under levers are very interesting and I really like the way they work. I have a side lever Grant and a Army&Navy that are nicely done and operate easily. When examining one of my guns it is funny to hear them ask "How do you open it?" The clean top strap allows more room for that nice engraving seen on many of these guns. At one time I had a 20 bore Jones system that was great fun to use in the field and would like to add another to my collection. I might be a bit odd but I really like to use those that are different from the standard modern top lever. My ejector guns are all top levers but for extractor guns I like to field something a bit different. Very interesting 30 years from 1860 to 1890 when all these different systems were being developed and field tested to determine which was the "best".