Parker Hale PH5C?

This is a pricey piece, just got one from the UK, 69 pounds sterling plus shipping.

The iris one was 145 pounds, though both were NOS. The iris ones are slick but more than I wanted to pay.

I think the slide is there. Here is another pic from a different angle. It shows what I think is the adjusting slide. 

Interesting about the colored filters. I was reading about that and did not know if mine would have it. I like using amber shooting glasses. I wonder if there is an amber filter for these?

Looks like there is an amber filter. Now if I can find one.

I have recently bought a #1mk3 rifle that someone had fitted this ph5c sight to ........not very well . They had drilled an extra hole ( not square to the action ) and in such a way that the tighter one tightened the extra screw the more something was bending. Other screw went into the ejector screw hole, all a bit rough. Actually turned out to be a real bargain  as I wanted the sight for my #4mk1*  so that was good  , but the rifle also had a very good cond heavy barrel fitted ,with the "H"  stamped on it .  Im happy 😁

Hamish 

If you want to fit a similar sight onto the No1 Mk3 then you could use (amongst others) a PH5A

Looks like this :

I never would have thought that little 0.05 inch diameter backsight axis retaining pin holds the action together.   I suppose it might hold 100 lbs, maybe more if it’s a high strength steel. But the load can’t be that high, or it would bend the pin.

You peaked my curiosity.  I have shot the No. 4 (T) with and without the backsight, never noticed any difference.  

Do you happen to know what the thread is on the PH 5c rear attachment (BA)? I’d like to get a longer bolt (screw) to see if it makes any difference.  

Outstanding shooting with your Savage Armourer.  I rarely get this result (less than 1 MOA), probably never with 10 rounds, occasionally with 5.  I’d say on average, I hold to 1 MOA in prone, and the rifle probably shoots to within 1 MOA, thus 10 shot groups run about 2 MOA.  The best I did in a match with my No. 4 was 10 consecutive shots within the 3 inch X ring at 200 yards (US NRA Short Range Target). Some luck involved there…

That 5BA bolt, what is the OD of the threads? The little bit I could find says .1260in/3.2mm. Is this correct?

Reason I am asking is so I can find some appropriate round stock for a spacer.