Earliest M1 barrel with a British proof ?
Attachment 18905Earliest barrel that I have seen to date is S-A 8-40 and not a Lend Lease. Also found a data sheet in the GCA Newsletter from some years back. This was s/n 7860 with a S-A 8-40 barrel and the London NP proof, my barrel in the photo also has the London NP proof
Lend Lease period rear sight cover markings
Here are a few selections from an old GCA survey put together by Tony Giacobbe. This shows the date and the type of rear sight cover mark -
8/41 2 or 7 8/41 B 9/41 J 10/41 F 11/41 ^ 11/41 ? 11/41 * 11/41 F 12/41 X 1/42 3
2/42 J These are just some samples there are alot more