Sig Sauer is a company headquartered in Exeter, New Hampshire, that manufactures a line of firearms. The company makes guns for law enforcement, military and commercial users. Every Sig Sauer gun has a serial number engraved on it. With this serial number, you can call Sig Sauer customer service and request the date of manufacture of the gun.
Inspect the firearm for the serial number. Depending on your specific gun, the serial number is found on the side of the barrel, the trigger guard or the receiver. Alternatively, the serial is listed on the certificate issued with every new Sig Sauer firearm purchase.
Contact Sig Sauer customer service at (603) 772-2302.
Give the customer service representative the serial number from your gun. Request the date it was manufactured.