Abstract: An arming device and a related method of operation are provided which selectively allow a munition to be discharged in a safe or an armed condition upon interaction with release and arming wires connected to the munition. The device includes a housing within which a munition discharge control assembly is contained that senses the discharge of the munition and then selectively ejects the arming wire from the arming device and releases the release wire from the arming device. The discharge control assembly includes release and arming mechanisms, which are rotatably disposed within the housing, and a release and arming control sub-assembly that selectively regulates the respective rotations of the release and arming mechanisms and the arming of the munition. The release mechanism retains the release wire, while the arming mechanism retains the arming wire.