A brief reminder of the improvement of the structure - the concept of a self-propelled 120 mm automatic mortar was born at HSW SA in consequence to the presentation at the Toruń artillery training ground (and the subsequent strong lobbying for this structure from the Scandinavian manufacturer) of the AMOS (Advanced Mortar System) mortar. The demonstration took place on September 14, 2006. This was the beginning of the export offensive of the fresh product, which the Finns had been working on intensively since 1994.