I just came across this thread. Below is a link to some photos supplied by Larry Grossman. Larry is the AMT employee that made the Auto Mag that Harry use in the movie "Sudden Impact". Scroll down to see it. It starts with a gun Larry made for Ted Nuggent. Click on the picture to get a slide show.
400 Bad Request
By the way, the Auto Mags are being made again. The New Company is starting off with a limited run of Auto Mags called the Founder's Edition which are patterned after the pistol from "Sudden Impact". The picture below is one in progress