Developed in the early 1970s by the UDES research group, Bofors and Hägglunds companies. In 1972, the project was provided by the Bofors company. Later, it was decided to return to the concept with a traversable turret, and development was continued within the UDES 14 project. The Bofors project remained only in blueprints.
The technical characteristics shown are for the Siege mode
Characteristics are specified for a vehicle with crew members trained to 100%.