A grenade mortar is a heavy weapon consisting of a hollow tube that is attached at an adjustable angle to a large base plate. It can fire any type of grenade, using a special shell called a grenade shell. It operates similarly to a grenade rifle, except for the greater range. Because it lobs grenades in a high arc, it has a minimum range of 10 meters.
A grenade shell looks like a mortar round. It must be loaded into a grenade mortar in order to fire a grenade.
Each Grenade Shell costs 8 Cr and has little appreciable encumbrance.