It turns out my rifle is covered. My serial number is below 100090 and that seems to be within their range. However I was told that the total time required for the modification would be at least 2 months. That's because CDNN is waiting to ship the bolts when they have at least 25 to send. I don't think I want to wait that long. Who else is doing the modification that is reliable and hopefully wouldn't lose my precious bolt? Anyone else have a gunsmith perform this work for them?