All the P99 holsters work fine for the P99c. In fact, many leather holsters have the muzzle sticking out of the holster as per the design. Put a shorter gun in there - and it fits perfectly. I used a Galco Glock 19 holster for a Glock 26 for 8 years. Worked perfectly.
I have a Bianchi 7L belt holster that I am using for my P99c. Galco has the Fletch and the Concealable that would work well as well. I've had several Galco holsters over the years.
As I said on another message recently when this topic came up, I went with the Bianchi just to try something different after numerous Galcos. Plus, I wanted a "lined' holster, which Bianchi offered.
But in my mind, when I ordered it from Midway USA, I thought the lined feature would be different. My ex-wife's family had an old 1911 Bianchi holster, and the inside of the holster had a lining of soft white material. I've never seen that on any other holsters ince then. I had hoped that this was what I would get. Instead, it has an inner lining of suede, which I suppose is a little softer than the regular inside of a leather holster. To be honest, I can't tell much difference.
If I had to do it again, I'd have just bought another Galco FLETCH. One of these days, when I no longer beg for Christmas money so I can buy another gun , maybe I'll ask my parents or wife to buy me a Galco concealable holster. It's really a beautiful holster... The boning on the outside of the Galco holsters are much better than on the Bianchi ones.