No 4 Receiver question

[mrclark303]

I've also often wondered if the idea behind it was to facilitate the mounting of a scope, but I've never heard of any hard evidence to confirm what exactly it is there for. It is typical of BSA, Faz & Savage rifles, but it is not evident on Maltby & LB rifles. I think, if my eyes do not deceive me, your rifle was FTR'ed at Maltby.

Maltby FTR and typical Maltby inspector stamps Roger.... Seldom seen (by me at least), I've only ever come across a handful of Maltby FTR's over the years.
I assume FTR work was taken on as production wound down in 45?