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They recently re-vamped the webpage. The info is there,, but it's moved. I never use it,, as it's known to be inaccurate. I use the RENE reference guide. If you need to know,, post the serial number & model here, (or part of it; (12-123XX) and someone will look it up. Also a call to Ruger records can get you the month & year of shipment.