This is the standard GoPro quick release clip with a built-in locking mechanism -single print, no assembly needed.
I have used James Rogers’s model from GrabCAD.com ( https://grabcad.com/library/gopro-quick-release-mount-standard ).
Print Settings
Printer Brand:
Prusa
Printer:
i3 MK2S
Rafts:
No
Supports:
No
Infill:
0.2 mm
Filament: eSUN ABS white
Notes:
There is minimal bridging in the model so the support is completely optional.
Credits:
fns720