The reason I think the receiver is WW2 era is because the number on it is: 3429466. Post a comment below! I want to know how to decipher the number on the barrel. Can someone point me to a serial number and date of manufacture list or chart for the Springfield Armory M1A's? I'm working on posting pictures but in the mean time I have the main serial number, barrel number and bolt number. O-16 removed from service bad heat treatment (see below) O … You can e-mail me for a complimentary copy of this in. was located in Texas is estimated at about 004075. Based on this output, the highest receiver serial number while Springfield Armory, Inc.
