Check this article, it somehow explains difference between slides. CORE, basically means that slide has cut out for optic covered with plate. As you look closer on rear sights cut out - CORE version needs shorter rear sight, otherwise it would stick way back out of the slide.

Smith & Wesson(R) Performance Center(R) Introduces New M&P(R) M2.0™ Pistols – Julie Golob


If you post PN (or SKU) from the box, we can verify if your models are C.O.R.E. or not.
I don't like C.O.R.E. versions so never actually looked for their sights. It may happen that you will end up with "suppressor ready" which are a little taller that regular sights.