Will this Sig Legion sight fit the P320 M18?

I have a Sig P320 M18 and would like to have an adjustable sight on it. Sig Sauer lists this optional sight for the P320 XCarry Legion. (See link below) It doesn't mention compatibility with the M18. But looking at Sig's documentation, I see that the M18 has a similar sight and optics configuration.

I've gotten mixed reports of whether the Legion sight can be installed on the M18. I thought I would run this by experienced gunsmiths to see if anyone has done this installation. Thank you for any help on this.

https://www.sigsauer.com/rear-sight-assembly-p320-adjustable-night-sight-legion.html