There is another third-party lens hood solution for Ricoh GR III + IIIx cameras called Squarehood. See the details at:
More Ricoh GR III/IIIx accessories can be found here:
Wepoto hand grip and L bracket for Ricoh GR III/GR IIIx cameras
New Ricoh GR III camera accessories (cases, grips and thumb rest)
Cheap 28mmm external optical viewfinder for Ricoh GR and Leica cameras
New: JJC automatic opening lens cap cover for Ricoh GRIII and GR IIIx cameras
You can now buy Ricoh GR III camera skins (and other GR III accessories)
