I just bought a brand new Model 7 short action with bolt from a good friend. He bought 2, kept one. He was told these were actions from the Custom shop prior to the sale. I tried the new Remington Arms website for serial number reference, but they said they can't verify because they didn't get historical data as part of the sale. This action has a serial # that starts with RR. Is it a Custom Shop? It also has a small square stamp on it that looks like a QR Code. Can anyone here help me verify?