You don't need to worry about holster fits with Gas Pedal® assists,
You can buy a stock brand holster, modify your own, or buy a very reasonably priced custom holster.
For the best, Doc highly recommends 4Brothers. They are superb quality and reasonably priced.
You can easily modify your own holster with a heat gun
For big brand holsters, Safariland 500 and 6000 series work with most applications.
Other great holster maker include Werkz and Uncles Mikes (Padded)
New for P365 X-Macro: Neptune Concealment / https://neptuneconcealment.