Look up a Remington serial number by using Remington Serial Number Lookup. This service uses the two-letter codes stamped on the barrel of Remington rifles and shotguns to determine the age of the firearm. You can also locate the serial number on the rifle's receiver and request an age approximation by emailing Remington support.
A serial number is printed on the receiver of each Remington rifle or shotgun, provided it's a newer model. Serial numbers were not a requirement until 1968, so older firearms may not have serial numbers.
You can still use the two-letter code on the barrel of the rifle or shotgun to look up the firearm's age. This code is located on the left side of the barrel, just in front of the receiver. The first letter of the code represents the month of manufacture, with the letters B-L-A-C-K-P-O-W-D-E-R-X representing the months sequentially such that B is January, L is February and so on. The next one or two letters represent the year of manufacture, which you can look up using Remington Serial Number Lookup. For shotguns with removable barrels, the code on the barrel represents the date of manufacture of the barrel, which may not match the date of manufacture of the receiver.