A gunman in Queens was done in by his own stupidity — a video of the crime on his own phone.

Sydney “Beans” London, 21, confronted Nathan Jordan on Ring Place in Springfield Gardens on Nov. 6. London pulled out a handgun and ordered Jordan to lay face down, sources said.

Jordan, 26, ran for his life. London fired three shots, missing Jordan as he fled, said sources.

About a half-hour later, cops caught up with London and found he had recorded the incident on his cellphone.