![](https://www.historynet.com/wp-content/uploads/2017/04/Arsenal-4-17-RPD-machine-gun.jpg)
US Secretary of Defense Robert McNamara displays a Chinese-made RPD light machine gun during an April 1965 press conference. (AFP via Getty Images)
AFP via Getty Images
US Secretary of Defense Robert McNamara displays a Chinese-made RPD light machine gun during an April 1965 press conference. (AFP via Getty Images)
AFP via Getty Images