A select fire 1911, one of four registered that were made by "an armorer who had been in Korea".

http://www.youtube.com/watch?v=ebitGRonUDs

http://www.youtube.com/watch?v=c3UdbFTAEks&NR=1

For you 07 type guys, also found this -
Colt's research and development team of William L. Swartz and Horace J. Kennedy received U.S. patent number 2462505 for this invention.
http://patimg1.uspto.gov/.piw?docid=...6RS=PN/2462505