This vehicle was developed from 1967 until 1975 as an alternative to the Strv 103. It was meant to have a 105 mm gun, one Boeing gas-turbine engine, a laser rangefinder, and an infrared surveillance device on a retractable rod. By 1975, the documentation for building a prototype was ready, but after assessing the vehicle's capabilities, the military scrapped the project. Instead, they decided to keep producing the Strv 103, which was already in service.