I WAS EXPECTING AN EARTH-SHATTERING KABOOM: Lightweight 120mm Mortars From Israel. “Israel continues a tradition of developing lightweight 120mm mortars. The latest innovation is the Spear system. This a 120mm mortar that can be mounted on hummer type vehicles. Spear uses an innovative recoil system that reduces the recoil and allows the mortar to be fired from lighter (under six ton) vehicles. The ‘soft recoil’ system reduces the force of the recoil over 90 percent. The rate of fire is also reduced a bit (from 20 to 16 rounds a minute) but with the use of GPS guided shells this is less of a factor.”