Fuji GFX 50r to Graflok adapter plate

As a mount, I used a cheap dumb adapter from fotodiox and disassembled the Fuji mount. The fit of the 50r against the plate is very tight, but this is consciously to get the 50r as close to the lens as possible. 

Tested and in use on a arca swiss 4x5. Will not fill the 50s line of Fuji GFX due to the larger handgrip.