The 4.2 or 107mm mortar is a rifled mortar, spin stabilizing projectile. Although the mortar requires a truck or tracked mortar carrier to move it, it 's still much lighter than field artillery pieces. It outranges light and medium mortars, and the explosive power is much greater.
M328A1
HE
M329A1
HE
M329A2
Wp
M335A1
Illum