I don't believe any of the stainless guns were imported. Interarms set up a US plant so they could manufacture the PPK in the US and avoid the GCA 68 import restrictions. The German and French guns were blue or nickel finish. I owned three PPK pistols over the years. My first was a German 1979 vintage blue 380. It fed Super Vel and Winchester Silvertips just fine. I sold it to help build my first house. The second was an early US made stainless 380 that would only work reliably with hardball ammo. It had a lot of sharp edges and was not a pleasant gun. I sold it during the divorce sale. My current is a later US made stainless 380 that feeds any type of ammo and is very reliable. It often resides in a front pocket holster during hot weather. If you get a good one it's great but some of the US built PPKs had reliability issues. Shoot it if you can before buying.