Performing a firearm is the most effective way to determine its age, production batch, and historical significance. Because "Springfield Armory" refers to both the original U.S. National Armory (closed in 1968) and the modern commercial manufacturer (Springfield, Inc.), the lookup process depends entirely on which type of firearm you own. How to Find Your Serial Number
Located on the rear of the receiver, right behind the rear sight. serial number lookup springfield armory
1. The Original US Government Springfield Armory (1794–1968) Performing a firearm is the most effective way
Stamped on the very rear of the receiver, right behind the rear sight. right behind the rear sight.