Absolutely with you it agree. Also it is not clear why it of the weapon refers to SP Mortar. It not so. It SP Artillery or Light SP Artillery.
Here links to a factory which lets releases this weapon:
english
http://www.artillery-mz.com/en/products/02/01/
http://www.artillery-mz.com/en/products/02/02/
http://www.artillery-mz.com/en/products/02/03/
http://www.artillery-mz.com/en/products/01/120/
For Nona-S, SVK, Vean - special shells have been created, but it also can shoot and mines for Mortars. The weapon has been created specially that it was possible to use shells of the probable opponent.