I had one of the early pre 1928 Parker hale No 5 sights (not 5 A). These sights were made without the adjustable zero plates that the later No 5 A sights have, and have a slightly different shape to them. I understand this pattern of sight was made between 1925 and late 1928, being replaced by the 5a in early 1929
I any case when I came across one of the sightless Mk V rifles, I put this sight on. It is an exact fit, like it was designed to fit the SMLE MK V rifle. The existing rear sight base acts like a sight protector for the No 5 sight. When the No 5 sight is completely in the down position, it is almost touching the sight base holes for the MK V sight, but is just clear on them. The windage arm adjustment wheel is just past the right hand side of the sight base. The parker hale No 5 sight works like a charm so when I actually got the correct sight for the rifle, I never installed it, it sits still in my spares bin.
In any case since then I have always assumed the No 5 Parker Hale sight was designed with the SMLE MK V in mind.
---------- Post added at 12:34 PM ---------- Previous post was at 12:28 PM ----------
Oh yes, in regards to bullies.
There was a rather nasty but clever bully in my brother’s class, a few years ahead of me. I never dealt with him in school, but when employed as a petrol station attendant had a crossing with him. Nasty piece of work, you could just tell there was something not quite right about him and he was to be avoided.
About 5 to 10 years after when back on holiday I read that he is in jail, having killed a prostitute for stealing his wallet. Beat her up and threw her in a canal where she drowned. It was a life sentence. My brother was not surprised by that. There are some who just cannot live in civilization, those anti-social attributes come out early in life.