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How to calculate the production year of a gun according to its serial number?
Look at your gun number. You don't need to add 0 pairs before the list. For example, the serial number of Type 95 automatic rifle is 0902xxxx, and this is eight digits. If it is an even number, use the first two digits of 09 gun model, 09+95- 1, and conclude that it was made in 2003. Production year = design finalization year+production year code-1.