I was talking to Blackisler on the chat and mentioned I saw this tv show where Baby Face Nelson shot his way out of an FBI ambush with a fully auto 38 super 1911. Seems strange but it really was true that there were such things. Seems the 38 super would shoot through armor that the 45 acp wouldn't.
http://www.thefirearmblog.com/blog/2010 ... e-pistols/
There is even an airsoft replica of the 1911 Machine Pistol.
http://www.youtube.com/watch?v=EslpI2MhVR4