Established April 7, 1987, by the United States and six of its allies, the regime restricts the proliferation of missiles and missile technology. The original MTCR guidelines ban the transfer of unmanned missiles, rockets, and cruise missiles capable of delivering at least a 500-kilogram payload a minimum of 300 kilometers. Updated MTCR guidelines now restrict the transfer of all missiles intended for the delivery of weapons of mass destruction, regardless of their range and payload.