What device is used to mechanically safe the rocket motor of the AIM-9M?

The Safe/Arm Selector is the device utilized to mechanically safe the rocket motor of the AIM-9M missile. This mechanism plays a crucial role in safety during handling and storage prior to launch. When the missile is armed, the selector allows the rocket motor to be activated for flight, whereas in the safe position, it ensures that the motor cannot be ignited accidentally. This prevents any unintentional activation while the missile is being transported or set up, thereby enhancing safety for personnel and equipment. The design emphasizes the reliable function of the missile safety systems, which is vital for operational effectiveness and safety protocols.