Great looking, heavy, reliable, heavy, relatively rare, heavy, not even related to the more common autos, did I mention that it was heavy?
Kidding aside, these have been used in past years by many skeet shooters, and I believe they also had a following among trap shooters. I have fired a few of these belonging to skeet shooters, and they are superb.
This link ought to answer most of your questions. If you don't buy it (assuming that's what this inquiry relates to), PM me. I am sort of looking for one myself.