I have had this little baby for several months now.
It came to me brand new in box. The top part above the plastic grips had an 8 inch piece chopped out of the metal tube, so it could be imported into the US.
It is a Steyr MP69 and was made in Austria in the 1960s. There is a 32 round magazine with it and it should fire 550 rounds of 9mm parabellum a minute.