Welcome to the forum. It's impressive that you are here and that you own a .45 XD-S Mod.2 (HS-S5 in Europe). From what I understand, it is even harder to get a gun in Poland than it is here in California where I live. Here we pass a test (30 questions about gun safety, operation, regulations) and pay $25USD to get a gun permit (Firearms Safety Certificate). I have read that you have to pay almost $650USD (PLN 2500) for a gun permit, pass a written exam about gun usage and regulations, then pass a psychological test. Wow! Good for you. I hope you can get the spring kit you're looking for. There are a lot of export restrictions for firearms parts.Hello from Poland . My name is Dawid and I live in Poland. Glad to be a part of the XDTalk Forum.