The "Bigot" was a modification of an M1911 .45 caliber pistol developed by the Office of Strategic Services during WW2. The OSS was a clandestine operations service, the predecessor of the CIA. The Bigot was intended as a way for commandos to quietly eliminate sentries - although we are not sure what advantage it might have had over a silenced pistol. Questionable utility doesn't prevent it from being a pretty interesting piece of equipment, though, and we had the opportunity to take a look at one up close recently. http://www.forgottenweapons.com/oss-bigot