Three observations. Since the trigger is still on the gun it must work or it would have been replaced long ago with a system which did work well. I wonder how easy that trigger is to operate in hunting conditions. And last I suspect it was devilishly complicated to make and fit.

Another invention which while technically sound just never took off. It is a very cleaver design attempt but with my fat fingers one which might work better on the skeet field than under hunting conditions. Wish it were mine though.