These are both nice kits, plenty of raised detail and easy to assemble.
The tracks are soft plastic but can be glued with normal solvent based glue. The "sag" in the tracks was actually obtained by glueing the tracks to the wheels with normal Revell liquid glue.
The Hasegawa crew you get with these mobile Flak platforms are not very good at all, big jointed, stiff poses, and lacking detail.
The two kits were painted using a drybrush technique, consisting of applying a black undercoat and heavy drybrushing with dark sand. The final effect is very nice from a distance, but close-up it's not so hot.
The crew figures shown here are all resin from the Milicast "late war German tank riders" set.