All up, this is a discussion about every individuals definition of a word. When asked these questions I use "original" to describe "as it left the factory" (allegedly, that is. Once again there will always be a grey area there particularly regards small parts)
And "correct" to mean it has all the right types of bits indicated by it's last marked condition (eg FTR, upgrade to * or /2 or such)
There will never be consensus within any single group of "collectors", let alone across the board of all collectors. Terminology that has no recorded definition (unlike the correct designations of the rifles as recorded in the LoC) will always be open for misuse.
Anyway, here's a pic of a LithgowSMLE that was developed by a Base Level armourer for an undisclosed "special" purpose... (must be worth a fortune!)