since this does not seem to be a thought exercise, which many of us love anyway, and your really looking for something like this, and questioning why a manufacture has not been interested, theres a really simple answer. There are widely available short recoil 9mm pistols with slide mounted sites, and steel frames that exceed the accuracy of any 9mm ammunition. By that I mean, a tuned out p35, 1911, or so on will shoot just as well as a 10' test fixture with a sliding block lockup. The ammunition itself becomes the weak link at that point.