AMOS, or Advanced MOrtar System is an automatic 120mm twin barrel mortar turret. It's intended to be installed on light vehicles, including APCs, IFVs and combat boats. Currently planned platforms include XA-185 and XA-203 Pasi, CV90, AMV 8x8, BMP-3, M113 A4, Piranha III, MRAV and Hydrema 910. It has an automatic loader and fire control system, so it requires no additional crew members (except for the gunner, of course). Standard crew includes a commander, a driver and a gunner. It takes less than 30 seconds to prepare for indirect fire, so AMOS vehicles can change positions rapidly.
AMOS is a joint project by the Finnish Patria Vammas and the Swedish Hägglunds Vehicle. The project was ordered by the Finnish Defence Forces in 1999, and delivered in 2000. It will be in service in 2003.
Sources:
http://defence-data.com/eurosatory2000/pagees04.htm
http://members.surfeu.fi/stefan.allen/AMOS.html