XM395 precision guided mortar munition
The XM395 precision guided mortar munition (PGMM) is a 120 mm guided mortar round developed by Alliant Techsystems. == Design == Based on Orbital ATK's precision guidance kit for 155 mm artillery projectiles, XM395 combines GPS guidance and directional control surfaces into a package that replaces standard fuzes, transforming existing 120 mm mortar bodies into precision-guided munitions.
Source: Wikipedia — XM395 precision guided mortar munition (CC BY-SA 4.0)