Sorry superjedi, but I have to disagree with you!
If you check out the pics you will see that the Automag (#3) has the same outline, rear site position, hammer location, flat bottom to the clip area and shape of the trigger. The Ruger (#1) is more rounded with no visible hammer. To me the Ruger looks like a cross between a German Luger P-09 and a Japanese Nambu Type 14!
Let me know if you find any fault with my reasoning!
All my best, Petseal
I had a thought that might explain the difference.
Was the actual prop used by "Greedo" in Star Wars different from the prop shown in this thread?
I will have to check the film or the internet but when I say it was a Automag I am referring to the prop shown here!
Maybe TI6815 can pipe in here as to weather this is supposed to be a screen accurate prop or not!