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 XR POWER DETECT 20-volt Max 7-1/4-in Brushless Cordless Circular Saw Kit (1-Battery & Charger Included) in the Circular Saws department at Lowes.com
DEWALT DCS575 7 1/4" 60v Flexvolt Brushless Cordless Circular Saw Bare Tool for sale online | eBay
DeWalt FlexVolt 60V Max Circular Saw Review | PTR
10 - 7" Diamond Blade Plus FREE Dewalt 7" Worm Drive Saw (DCS577B), Battery (DCB609), and Fast
DEWALT 20V Max* 7-1/4 in. Brushless Cordless Circular Saw with FLEXVOLT Advantage™ - DCS573B - Celtic Building Supplies | Yonkers NY