Guy's I just got an M1 on GB. It's an SA in the 1.1 million range and when I went to look for a barrel date, all if found was 1-S-A-1-4. A P and a punch mark a little bit up the barrel and a 3 towards the chamber. There are no other markings and no drawing number. Anyone have an ideas? I have seen quite a few M1 barrels in the past but none like this one.