Bill, no Sir it is not. There are dovetail based mounting options that replace the rear sight : youtube.com/watch?v=GamxZxs8yC0&t=6s

Not sure which slide kit your talking about? I know there is a performance center slide kit availble from SW for the original MP that is optics ready, but its not compatible with the MP2.0
I've been looking at getting an optic on my Performance Center Pro series MP2.0 and the only optics ready slide ice found is by Ed Brown, it is nice but its also $400 and doesn't include the barrel, or any of the internals.
It can be found here
edbrown.com/product/ed-brown-fueled-mp-2-0-slides/
What ive decided to do is when I get my optic (either a holosun 509T or a Trijicon RMR) I'm going to have my slide milled by either Primary Machine (About $200) or Agency arms (about $320 but includes new irons standard height or supresor height and made by Dawson precision also includes an agency arms cover plate)
Both services are top notch and can be found here
Agency arms----
agencyarms.com/rmr-optic-cut-glock-copy
Primary Machine-------
https://primarymachine.com/m-p-optic-milling/
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The Primary Machine one is listed at $160 thats without cerakote or nitride finish on the bare metal and also with out back up irons.