M4 version for using metal DIN rail clips (or 4mm clips)
M3 version to use with 3mm (remixed) printed DIN rail clips from here: https://github.com/VzBoT3D/VzBoT-UserMods/blob/master/pbsuper/VZTrident/VZT330_400/Electronics/Other_PS_Mounts/UHP_350_Mount_x2.stl
The author remixed this model.