Rebels seized a gilded Kalashnikov from his Bab al-Aziziya compound when it fell in August.
Another fighter claimed he had slapped Gaddafi with his shoe after his capture, and demonstrated how the former Libyan leader was shot in the stomach.
A rebel with him who claimed to have witnessed the attack said: 'This man hit Muammar Gaddafi by his shoes.
"Muammar Gaddafi was not in car - he was sleeping with some bodyguards around the place.
"We catch him in there and we shoot him by gun, 9mm."
Asked where Gaddafi had been shot, the other rebel indicated the right hand side of his stomach. He also waved his shoe to demonstrate what he had done to the dictator.
Hitting someone with a shoe is a sign of huge disrespect in the Middle East. When Saddam Hussein's statue was toppled in Baghdad in April 2003, Iraqis swarmed around it, striking it with their footwear.
Iraqi journalist Muntadar al-Zeidi hurled his shoe at George W. Bush during a press conference, but the then president of the U.S. managed to duck out of its way.