I know for years the general accepted serial number range for a 1943 dated M1A1 has been within the serial block up to 9,999.99. However I read a post a couple of years ago that M1A1 carbine manufacture also included 1943 made carbines number ranging from 2,712520 to 2,995100. Can't recall were I saw that.
I have an M1A1 # 2,921478 w/bbd date of 10/43 and I always wondered if that serial number range above was ever confirmed as being included in the estimated M1A1 carbine manufacture range.
Anyone know? Ray