Yes it will be compatible if your M&P 20.0 is full size.
The Ed Brown Products Fueled M&P 2.0 Pistol Slide w/RMR Cut is compatible with M&P 2.0 full size pistols.
The Ed Brown Products Fueled M&P 2.0 Pistol Slide w/RMR Cut will fit the Shield Plus frame, however, S&W does not recommend using an M&P 2.0 slide on a Shield Plus.
From what information I could find the Ed Brown Products Fueled M&P 2.0 Pistol Slide is only compatible with the M&P 9mm M2.0 models.
The Ed Brown Products Fueled M&P 2.0 Pistol Slide has a slide cut for the RMR. So the RMRcc will not fit this slide.
Yes, these Ed Brown Products Fueled M&P 2.0 Pistol Slide w/RMR Cut are compatible with Glock sights.
The Ed Brown Products Fueled M&P 2.0 Pistol Slide have an optics cut to fit red dots with the RMR footprint. The Vortex Razor uses the C-More mounting footprint so it will not fit the Ed Brown Products Fueled M&P 2.0 Pistol Slide w/RMR Cut.
No, the Ed Brown Products Fueled M&P 2.0 Pistol Slide w/RMR Cut is designed for Smith and Wesson M&P2.0 9mm handguns.
The Ed Brown Products Fueled M&P 2.0 Pistol Slide w/RMR Cut will only work with Full Size M&P 2.0 9mm handguns with 4.25" barrels.
No it won't. this slide fits the full size with a 4.25" barrel