Welcome to the forum. Whenever someone asks about a holster, several will get on here to recommend their favorite maker, whether that maker produces one that fits your gun or not.
There are a lot of companies out there making holsters, it's hard to sort through them all to find what you are looking for.
I have a 5 inch MP9, although not a PC version. I'll be interested to know if you find some more makers that make a holster for a 5 inch model, as I've been looking for a new holster.
Many don't list one. The chances that one makes one just for the PC and it's higher sights are even more slim.
You might end up having to get a holster for a non PC 5 inch and if the higher sights rub, modify the clearance for those sights.
I am using the Kydex holster that I had for my 4.25", it fits fine but 3/4" of barrel and slide sticks out the end. No biggie unless I sit down in the dirt while camping. That holster was one of several I got from
On Your Six Designs.
I see that they list a holster for a 5 inch Pro, not sure if the Pro has sights like your PC. Maybe worth checking out. Their prices are very reasonable and a lifetime warranty on their products.
Good luck on your search, maybe someone will come along that has the same PC model as you.
Smith And Wesson Custom Kydex Holster - OWB And IWB Concealed Carry Holsters | On Your 6 Designs