You can make the reg circ saw into a track saw by switching base plates. This is a standard setup in England I've seen https://www.partshopdirect.co.uk/dewalt-dcs575-dcs576-shoe-base-with-guide-rail-slots-pN472354/ : r/Dewalt
Dewalt dcs 576 with new blade - YouTube
DEWALT DEW{DCS576N} DCS576N XR FlexVolt Circular Saw 190mm 54V Bare Unit 5035048645826 | eBay