From the chamber positions in the pic, it looks like a 4 shooter, chamber positions at 12:00, 3:00, 6:00 and 9:00. The classification is interesting if indeed the gun fires with each pull of the trigger, but so does a DA revolver, yet it is considered different than a semi-automatic. I guess the classification answers my question as to whether it is a SA or DA. For those who care, adding a mag extension would be problematical. I would like to see a carbine version with rifle sights. Is this thing in current production, or is it a flash from the past?