I also lost a very nice double in the USPS certified mail system for over two months. Their tracking system is internal and useless to the end user. I filed a loss claim when the required time was up and they found it and delivered it within a week. I didn't lose the gun but I did lose some sleep. I've found FEDEX to be the most reliable but I hear bad reports on them and UPS all the time too. I've also found UPS and FEDEX to be the most expensive and having the most hoops to jump through as well.