There is a GoPro-Mounted version, and a Stand version. (stand version has 70deg overhang, but it is printable with a standard ender 3 +pla and no supports)
Recommended print settings:
All clearances are 0.3mm or more - Ad horizontal expansion as needed.
Simplified-3D users: S3D might have issues with intersecting bodies go to Mesh > Separate Connected Surfaces. check the preview before printintg.
0.2mm Layer height or finer
PLA or ABS tested and working.