I have a Fobus C21-B for my Bersa .45 UC, and it's also listed as the model for the Kahr CW9/P9. I ordered a Crossbreed supertuck for my Bersa, right before I bought the Kahr, and was very pleased to find that it fit both the Bersa and the Kahr perfectly. My 1911 also fits it like a glve, and the fobus is called out for it as well. I am currently carrying the Kahr in the Supertuck, and am very pleased with it.
Hope this helps.
MH