 In German use, the captured Soviet mortar was given the designation 12 cm "Granatwerfer" 378 (r).The GrW 42 was basically the usual three part construction made up of a circular base plate like the previous Soviet design, the tube itself and the supporting bi-pod.Because of the greater weight of the weapon (280 kilograms or 620 pounds) a two-wheeled axle was utilized, enabling the mortar to be towed into action.