Freefly FRX Pro Manual page 12

Install a FRX Pro module to your gimbal using the
Lock mounted to the pan axis of your gimbal. See the diagram below for suggested
mounting areas on your gimbal.
If necessary you can update the orientation of the Pop-n-Lock dovetail to make
adjust the orientation of the FRX Pro module.
Alternatively you can utilize the zip-tie features machined into the front face of
FRX Pro to secure it to the mounting surface.
Pop-n-Lock dovetail and a Pop-n-