Was wondering if I have to buy specifically the Sig P365 mags or do any other Sig mags fit my new Sig? (as mentioned previously I've never owned a Sig prior to owning this absolute beauty of a gun!)..
Thanks in advance.

The 365 was made around the design of its magazine, they even supposedly have patents on the magazine itself. So all that said it’s the only magazine that will fit this gun that I am aware of.