This is a Remix from the original controller mount:

https://www.thingiverse.com/thing:436826

Problem was that the files included where incomplete. I remade some parts. If you just want the right parts for the original mount use:

1 arm (Mirror it for the other side) Faceplatefixed_withextrahole or faceplatefixed (has no hole on top if you dont want the extra trigger

You could also use "test beide aan elkaar" wich has both arms in one.

At last the files "Special arm with finger holder" and "TPU finger holder" are specially made for a client that has a disability in his left hand, with this added he can rest his fingers on the side. I printend the holder sheet in TPU so it feels nicer.