Welcome D101. This is a great place to learn about whatever Walther you have interest in. As DUA mentions, the PK380 forum and the stickies there will give you your foundational information and when you have a specific question you'll find a whole group of knowledgeable guys you have been great jumping forward to impart their knowledge. I've been a member for only 4 months now and it's like drinking from a firehose. So much to retain and many interesting discussions.