I bought a G30SF yesterday that apparently has 2 manufacturing errors. SF is not marked on the frame and the serial # comes back as a straight G30. Glock tech said there was only one produced as a prototype without the SF badging on the frame. I don't think this is the prototype but is a manufacturing error of some kind. I searched but could not find anything on it. Does this have any collectable interest? See this thread for the discussion. http://glocktalk.com/forums/showthread.php?t=978365&page=2 Wanna kill these ads? We can help!