Unfortunately our handgun sight sets are not compatible with any of the Sig Sauer P320 X-Series pistols. This includes the X5, X5 Legion, X-Carry, and X-Compact. This is due to these firearms utilizing a rear sight optic plate where the rear sight is attached to the optic plate, i.e. no rear sight dovetail.
However TRUGLO offers a Fiber-Optic Pro front sight only compatible with the Sig Sauer P320 X5 (includes X5 Legion).