I just cleaned my c9 yesterday and when I took the slide off, the recoil spring popped out. The question I have is does the recoil spring guide rod belong up at the front of the gun or the back. It was attacehd to the spring when it popped out, so I don't know. The diagram of all of the C9 parts shows it up front, but I didn't know if that was right. I just recently saw a picture of a Sig where it was behind the spring. Thanks in advance!