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 DCS576T2-GB 54V XR Flexvolt 190mm Circular Saw with 2x 6.0Ah Batteries in TSTAK Case ( Fits Rail ) from Lawson HIS
Toolstop - These 1.5 metre guide rails from Dewalt are designed for use with a variety of Dewalt saws (DCS520, DWE520, DCS576, DWE576) and are the best way to guarantee precise, straight,
DEWALT DUST ADAPTOR SET FOR DCS570 DCS575 DCS576 XR CIRCULAR SAW N168420 n108974 | eBay