Howdy folks. What was the reasoning for undated M1 Carbine barrels? Was it expediency, or to save money? Which manufacturers had undated barrels; and if known, about what dates did they come out? I need to look through my Carbine Club newsletters to see if anything is mentioned. I can only go back to Jan. '00, as that is when I joined. Thanks.
Semper fi,
Joe P
