Step files from AMS?

hey, has someone an exact *.step file from the AMS?

i want to build an enlargement for it, i have an idea, of tweaking the AMS, but i dont want to do more work than needed, to measure all out, when someone has an *.step file from it, which i can use in my CAD.

that whould be great :+1:

The best i can find is:

!! I dont know how accurate it is !!