Take a deep breath and read what I wrote. Maybe take a blood pressure pill or something.
If your policy is as wonderful as you say it is, that would be the conversation you have with your customer. It might look like this:
"Ok sir, we have that rifle in stock and based on our current sales volume, it should ship out within X days (or X days of approval by CFO which we cannot control). If you have any problems with it, let us know. We stand behind our products 100%".
Stop personalizing. My comment was that retailers need to inform their customers and customers need to ask questions. Unless the parties knowingly and willingly give up those rights, a document on a website or a stamp on the back of an invoice isn't meaningful.
FF