My own view is that the "EX" marks were added some time after the receivers were made: the receivers are well-finished (at least EX11, which I examined in some detail), whereas the EX marks are...
Type: Posts; User: Thunderbox; Excluded Forums: Milsurp Knowledge Libraries (READ ONLY)
My own view is that the "EX" marks were added some time after the receivers were made: the receivers are well-finished (at least EX11, which I examined in some detail), whereas the EX marks are...
Very interesting.
Here is a rifle that used to be in my collection; a rifle that had completely unknown provenance, but has exactly the same style of serial number as the one in your photos!
My...