This model SIG P320 did include SIGLITE night sights when it left the factory. Who can say whether or not they might have been changed out? . Better to call and ask.

Erik, Buds Customer Service should be able to have the inventory dept. confirm if this batch of certified's have Night Sights at 1-859-368-0371 9am-9pm EST Mon-Fri. or use the Blue Chat now button at the bottom right corner 9am to 9pm Mon - Sat and 9am to 7pm Sunday.

Maybe there is no way to tell until you get it with the Sig CPO guns there is no guarantee of which specific P320 and which feature you will get it depends on what the original guns had