★Globalsecurity.org Type 10 MBT-X Prototype (TK-X) The Type 10 TK-X (MBT-X) project aims to build a new main battle tank to replace the existing Type 74 main battle tanks currently in service with the Japan Ground Self Defense Force. This tank will be deployed to the narrower and more mountainous regions of the country. The design emphased C4I capabilities as well as increasing performance, firep