I just learned about LBC here, yesterday. So, I checked my rifles for their LBCs and found that my 99E with 1MM serial number was made in 1964 with LBC 10R. My older 99F with serial number in the 7xxxxxx range has no LBC. What's up with that? Any ideas? My oldest rifle, a 99EG with serial number in the 3xxxxxx range is too old for a LBC.
