I would have preferred more discussion about the rifles themselves. Decocking a rifle requires extra effort and is impossible to do with many designs without dry firing.
---------- Post added at 08:48 PM ---------- Previous post was at 08:41 PM ----------
Just to make sure, you're talking about the pressed sheet metal rear sights on No5's and not the ones on No4's? If so, that lends evidence to them being less common during WW2 also, versus them being common during WW2 and mostly and purposefully swapped out later. Just speculation.