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 DCS575 and DCS576 54V Circular Saws - Top 5 Things you need to Know - Toolstop
DeWalt DCS576 Flexvolt Circular Saw and Vacuum Kit - 2x 4Ah Batteries, Charger and Case