Barrel Stamp Below the Date

[lonewolf]

I know I have read this before, but I cannot find the thread...What does an "A" stamped below the date on a 10-19 SA barrel indicate ?
Thanks

Information

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[Bolo Badge]

I believe it means that the barrel was salvaged from an earlier rifle and was considered "acceptable" for continued use.

[Bill H]

When the rifle was returned for overhaul, the barrel was judged ok to use, so was not replaced, but rather remained with the receiver.