I couldn't find a Mando keycap that I liked so I remixed this from a solid helmet and a nice looking low poly keycap.
Full credit goes to the original creators, Ploique and Musilitar
https://www.thingiverse.com/thing:4059039
https://www.thingiverse.com/thing:2091304

Depending on the switches and the finish of the print it may need a little cleaning up to make it fit. My keyboard uses Outemu switches so I do have a little filing to do.

Edit,
Fixed the file so it will slice correctly. Unfortunately it imports way to big so I had so scale it down to 10% to make it fit. Also sorry for the file size...
On the upside I know a little more about how to use Mesh Mixer now