bolt action m21 mortar carrier half trackBringing support fire to your mobile forces with the M21 Mortar carrier, ideal for winkling out those dug in infantry! By the middle of the war the US Army could field legions of tanks and support vehicles, backed by the industrial might of the USA. Using their reliable M3 Half track as a basis, they created the M21, a mobile mortar carrier that could keep up with advancing tanks and armoured infantry. This useful vehicle carried the simple but