BudsGunShop.com - Rear Sight Plate

Keith, it does include a rear Sight/Plate Sir. Unboxing video here : youtube.com/watch?v=jFkJVuFhqp8

Keith, Yes this QP P365XL special does ship with a replacement sight base. So you can replace optic with rear sight.

Yes sir
Comes with optic installed and factory zeroed, but includes the cover plate with rear iron attached.
That is the Law Enforcement discounyed model of you are a qualified professional jump on that deal if not and you need the civilian version it can be found here
glockstore.com/SIG-P365-9mm-3.7-Optic-Ready