Not many choices for the PK380, unless something new has come along recently. I think Crossbreed makes some models for the PK. Sticky makes a model that fits well, it is the same model that fits a Glock 26. My wife had an OWB custom made by Hooch Holsters, and it is nice.
I use a blade tech for my PPK....and a dual mag pouch....they make good quality gear, I have over a dozen of their IWB's and OWB's for various pistols, revolvers.....there will be a waiting period for your holster, but it will be worth it.