Yes, both are Dove Tailed. If you are looking to upgrade to Night Sights, The Millennium Series, the early 24/7's, and now the PT800 Series Pistols have the same Dovetail dimensions and are cross compatible.

Sights are a three white dot pattern and are drift adjustable for windage. Both front and rear are dovetailed into the slide and securely retained via an Allen screw. They are cut a bit taller than many other sights and allow a generous amount of light around the front sight. I found them very quick to acquire.