I called Global Trades today to order a custom serial number (and underfolder) 7.62 receiver. The nice lady told me sorry, but no custom numbers until they catch up on the backlog of orders. She very nicely offered to give me an update at the end of the month, but told me she though it would be a while. I asked her how they could increase production beyond where they are now, and she told me "the receiver line is working a longer shift." I told her thanks and that I would call her later in the month.