That’s enough time to take the airtrain to the subway or LIRR and into the city to go to B&H a block from Penn station which will have everything and anything you need and back, with plenty of time to spare in the lounge…

But is just so an online order and in-store pickup from a Best Buy. The one at the Green Acres Mall in Valley Stream is no more than a 15min Lyft/uber/cab ride each way. In my experience Best Buy is pretty good with having pick up orders available within an hour or two. You could order before leaving from CDG or even on the flight (if there’s WiFi) and have it waiting for you when you land. You can order from multiple Best Buy’s if you fear the closest one won’t have them and go to the next closest at the Gateway Center in Brooklyn.

There’s also a target and a dick’s sports by each of those Best Buys which might have the GoPro mounts too. And also do online pickups.