This ww2 German weapon system was 15 or 30mm cannon taken from aircraft and mounted in 3’s on a simple conical mount.
These were fitted to everything from simple wooden carts to U boats.
They were also mounted on the Sdkfz 251 half tracks and extra armour was added to the hull top for added protection which is included in the kit.
The picture shows it mounted in our 251 h/track but it should fit any suitable 72 scale 251 on the market.
This kit skill level is B
72 scale conversion kit skill ratings:-
A = easy to assemble or simple add on parts
B = slightly harder to assemble a bit more time/skill needed.
C = harder to assemble with more fiddly parts and time needed to complete