Greetings

When Lyman 48 sights were installed on the M1903 or 03-A4 were the mounting holes in the receiver blind holes or were they drilled through the receiver wall?

I'm considering an 03-A4 which had a Lyman installed and the mounting holes are drilled through. I do not know if this was standard procedure and if not, whether it is a safety concern.

The receiver still has WW2 Parkerizing so I asume it was not drawn and tempered to ease the drill and tap operation.

Thanks in advance

Jim
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