Here is my GoPro 5 case with and without a Microphone mount included it fits perfectly if your printer has good settings.
You need to print this with support.
Right now i need to optimize the openings for the power supply.
UPDATE:
newest Version must have a better access to your Powerplate.
GoPro5_case.STL | 877.1KB | |
GoPro5_case_micro.STL | 1.0MB | |
GoPro5_case_micro_V2.STL | 232.6MB | |
GoPro5_case_V2.STL | 215.0MB |