The FMP-1 (probably standing for Festung Maschinenpistole) was a remotely-controlled German submachine gun that was produced during World War II.
The developmental origins of the FMP-1 are not well-documented and the designer is unknown. It was developed to cover German fortifications on the Siegfried Line during World War II. The purpose of the weapon seems to have been to provide blind covering fire for the troops defending the positions and to suppress advancing enemies; it was not intended to be aimed. An example was captured by the British and studied at RSAF Enfield after the war.
The FMP-1 was a blowback-operated submachine gun based on the MP28.II action. The firing mechanism was electronically-activated by a connecting wire. It fed through 32-round magazines that would need to be manually reloaded.