The shake awake on my year and a half old V1 507k on my P365 stopped working last week. I emailed Holosun last Wednesday and had a prepaid priority mail shipping label 2 hours later. I had it in the mail Thursday. Just got an email saying my replacement is shipping back priority mail, so less than a week after it got back to them. I hadn't even registered it for the warranty when I got it because I never get around to doing that kind of thing, so I'm especially impressed.