Here is some information that you can get from you serial number after 1921. Remington's manufactured after 1921 have a code located on the. 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. Remington 700, 870 or 1100 serial/barrel number lookup will work with Remington 700, 870 or any other Remington shotgun or rifle. It will show you date of manufacture of your firearm. It is very easy to use, it uses information from the Remington company. Buku Pelajaran Ipa Kelas 6 Sd.