I sent and email to HK CS on the 10th explaining about some of the coating was coming off on my used VP-9's rear sight. I received a reply 10 minutes later requesting pictures, after work I took a couple pictures and forwarded them to HK. I received a reply the next day telling me to look for an email from FedEx providing me with a return shipping label. I packaged the slide up and dropped it off at the FedEx office on the 13th. An attempt was made to deliver my slide yesterday the 18th but was at work and I had to be the one that signed for it. I made arrangement to have it delivered after 5pm today 19th (cost me $5) the slide oiled up and wrapped in bubble wrap packed in a huge box surrounded by more bubble rap. The box was stamped "fragile", also included were two more rear sights. This is what CS should be like!