On the back of the soldier, the soldier getting on to the kettenkrad on the right, it looks like there is a low spot on the tunic for a rifle to fit into. I can see the sling molded in place. After looking at the front of this figure,it looks like the sling goes under his ammo pouches behind the belt that they are attached to. You should definetly mold this so that the sling goes over all field equipment, for quick removal.
Otherwise,these figures look very good. I especially like the second semi-standing driver, which can be used for both a moving and stationary kettenkrad