The Collapsible GPS Mount for Matrice 600 Pro from DJI can be used to replace a broken mount, or to add this functionality to your Matrice 600 Pro. It's designed to work in conjunction with the included extension rod and hardware. When used together, you can mount a GPS unit (not included) to your Matrice 600 Pro.
We highly recommend that you have insurance when you are flying drones. We have found that Skywatch.ai offers some of the best options for Drone Insurance.