Christopher, unfortunately, the only way to tell is by the serial number. FDL9250 and up are 2.0, FDM0001 and up are 2.0, FDN3214 and up are 2.0 FDO0001 and up are 2.0, FDP0001 and up are 2.0.
Not sure if Bud's can give you a serial number, but it's worth a try. 1-859-368-0371 9am-9pm EST Mon-Fri.

Hi Christopher and welcome. This is a recent production Optics Ready Model and is more likely than not is a 2.0. Cheers and stay safe!

You might want to try and contact WALTHER ARMS CUSTOMER SUPPORT instead of Bud's.
479-242-8500 EXT. 7
customerservice@waltherarms.com
Customer Support