DEWALT DEW{DCS576N} DCS576N XR FlexVolt Circular Saw 190mm 54V Bare Unit 5035048645826 | eBay
Dewalt DCS575 and DCS576 54V Circular Saws - Top 5 Things you need to Know - Toolstop
DEWALT DCS577T1 FLEXVOLT 60V MAX 7-1/4 in Cordless Worm Drive Style Circular Saw with 6.0Ah Battery Kit for sale online | eBay
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 Circular Saw XR Flexvolt 54V Cordless 190mm With 2x6Ah Batts, Charger And Case | Dvs Power Tools