C&H Precision and Calculated Kinetics essentially make CORE 2.0 to RMSc adapter plates. They just use the Holosun K modified version of RMSc (slightly shorter front posts, no back posts) and are sold as Holosun EPS plates.
However, I do not recommend that you get one for this Meprolight Pro S, nor should you buy a Meprolight Pro S at all unless your slide is cut for the RMSc footprint like on a Shield/Shield Plus.
The Pro S is misleadingly sold as using an RMSc footprint. If the pictures are correct, it does not have an RMSc footprint, it comes with an adapter plate that does. To put this on an M&P, you would be stacking the Meprolight's Pro S to RMSc plate on top of an RMSc to CORE 2.0 plate.
If you're set on an enclosed optic, save up a little more money and get a Holosun EPS (Holosun K footprint) or Steiner MPS (Aimpoint ACRO footprint). Or, save up a lot more money for a Trijicon RCR (RMR footprint) or an Aimpoint ACRO.