They resumed stamping the date code on the barrel on 10/1/01.Hi, I stumbled upon some data about 870 serial numbers, with the prefix and suffix letter designations, it seems that I have an oddity. They continued to mark the date code on the end flap of the shipping box.

(*) On 8/9/99, stopped stamping the barrels with the date code. One needs to be sure that the barrel is original to the gun before trusting the Barrel Code listing, above. Using these barrel codes to date a shotgun is somewhat unreliable, as shotgun barrels are often interchanged at random. Using barrel codes (such as those listed above) to date the manufacture are reliable on Remington rifles, as the company rarely changed barrels on a customer's rifle. O - Jul W - Aug D - Sep E - Oct R - Nov X - Dec Serial Numbers by date (factory record book)ī - Jan L - Feb A - Mar C - Apr K - May P - Jun The following letters correspond to the months of the year, for example B=January, L= February and so on:ī - L - A - C - K - P - O - W - D - E - R - X Remingtons manufactured after 1921 have a code located on the left side of the barrel near the frame that identifies the year and month of manufacture. Remingtion firearms manufactured after 1921 The following serial number information is for

OK, I was able to copy and paste.here it is

Look up remington 870 serial numbers