A system and method for interconnecting analog legacy stores to both legacy and modern aircraft. One aspect of the invention provides for a dual mode launcher having a first interface for interfacing with a modern aircraft and a second interface for interfacing with a legacy aircraft. Either the first or the second interface is connected to the aircraft depending on the hardware platform supported by the aircraft. Signals received from either interface are converted to digital and placed on a digital input/output bus and converted to analog for use by the store. Likewise, signals transmitted by the store to the aircraft are converted to digital and placed on the digital input/output bus for transmission to the aircraft. The signals are further acted upon depending upon which interface is connected to the dual mode launcher assembly. The dual mode launcher provides seamless operation of the store interface regardless of which type of aircraft is equipped to carry the analog store.