Got home and submitted all of ours for the program; process took maybe 5 minutes, and that included getting pistols out of the safe, and a separate submission for each of them.
Obviously, the 4-6 weeks to get the pistols back after the undetermined wait to ship them off is less than appealing. (The most common number I've heard for P320 sales is ≈500,000. Not sure how accurate that is, but I can see how that would be a significant number of pistols to process...)
No further action is required from you at this time.You will receive an email from SIG SAUER at a later date that will include a prepaid shipping label and instructions to return your P320 pistol and any P320 caliber exchange kits that you have. It may take many weeks for you to receive this next communication, but we won’t forget about you (SIG will not begin the upgrade process for a few weeks as we prepare to make this upgrade). Once your P320 is shipped and received at SIG SAUER, the turnaround time will be approximately 4 – 6 weeks. This lengthy process is due to the high volume of pistols in the marketplace. Transit times may vary depending on your geographic location and receipt of your returned pistol. In the meantime, your SIG SAUER pistol is safe to carry and use as originally configured from the factory.
The fact that the entire process will be free of charge to us goes a ways to alleviating that.
FAQs about the program are at the bottom of the page linked above.
BTW, if you have caliber exchange kits in addition to one or more P320s, they recommend sending in the slides, as well, as
the striker(s) will be replaced, and the slide(s) will need the disconnector cut.
I'm honestly not too concerned about toting the P320 Sub Compact in the meantime, as I don't plan on dropping it multiple times in just the right orientation to cause an ND.
Don't really care whether the hysteria brigade thinks I'm overly optimistic or a fool.