I found a version of this model on Thingiverse, but wanted to make it AMS compatible. I also reworked the STL to make the top lettering have a curved nature to match the top and added adaptive layer height to make the top of the button smoother.

Also needed to complete the button:

-three 9.5 x 19 mm springs (can also by two, 0.75 X1.5 inch springs and cut in half)

-three M3 flathead screws