Systems and methods for a fiber optic connector with a positive locking mechanism are disclosed. The fiber optic connector has a plug connector and a mating receptacle connector. The plug connector is comprised of a plug body, a coupling lock indicator, an inner coupling nut, an outer coupling nut, a back shell, and a ferrule. The mating receptacle connector comprised of a rear cap, a receptacle body, a mating indicator, and a second ferrule. When the plug connector is fully mated to the mating receptacle connector, the coupling lock indicator on the plug connector and the mating indicator on the mating receptacle connector are not visible, signaling that the two connectors are fully mated, but not locked in place. When the plug connector and the mating receptacle connector are locked in place, the coupling lock indicator is visible and the mating indicator is not visible, signaling positive locking.