Shield RMSc features the Shield RMS/SMS mounting standard.
All the distances are in millimeters.
Click here to find out more about the Shield mounting standard.
Dimensions of the Shield RMSc footprint

Shield RMSc Footprint
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A photo of the Shield RMSc footprint

Red dot sights that share the Shield mounting standard
Click here to find out more about the Shield mounting standard.
Summary

Article Name
Shield RMSc Footprint
Description
Shield RMSc features the Shield RMS/SMS mounting standard. In this article, you can see the dimensions and the photo of the footprint.
Author
Andraž Gradišnik
Publisher Name
Optics Trade
Publisher Logo

So just to confirm, the RMS and RMSc have the same footprint? I'm trying to find the right plate for my optics-ready CZ P10c.
They have the same mounting standard, meaning that the dimensions of the mounting components are the same (distances between screw holes, sockets, etc.) The footprint is a little bit different, the width and length don't match entirely. This is explained at the beginning of this article:
https://optics-info.com/footprints-on-red-dot-sights/
can somebody actually measure an RMSc optic? the dimensions on that diagram don't make any sense, the front recoil lugs would be in front of the optic with those measurements
never mind, I assumed the arcs were on the same center
You should add the Vortex Defender to this list.
Thank you, Mike! We've added it.