Not my rifle, it went through the shop.
Just imagine a Merkel 375 with the micro red dot sight in place of the rear sight. Super low and compact.
I ran the rifle after the sight installation and got the sight adjusted for the ammunition that shot to regulation. The little RMR didn't affect the rifle's regulation at all.

Something to note - you should make sure that red dot sights work for you with whatever vision you have.
I have astigmatism, and even the best red dot sights end up looking fuzzy for me.

My preference would be to have a bright fiber optic front sight with a perforated sight hood. That's much easier for me to see properly.