Peter: seen this low axis pin on many No4s?

[RJW NZ]

Hi Thunderbox, Just looking at your pic of the sight pivot pin in place, at the risk of sounding like a twit, it seems to have a larger diameter than usual, and if so would that close the gap enough to cause the problem? My pin dia is .1425`, and the very small clearance under the pin to bolthead (on the 6 just cos it was handy and fits the 55 too) is .026.?

[RJW NZ]

No, not the enfield itus, but the cause of one of the itches has been cured.
Well, at least and at last, my sight on the 6 problem has been solved, jmoore sent a pic of the base of his sight and I was able to duplicate it in about an hour, hooray! Took at least three years, no one can accuse me of being too swift...!
I found a short little bolt that would fit inside the stock no4 sight spring, rounded the head to the shape of a ball bearing, then slightly rounded the corner of the sight where it folds over, a bit of a shallow pit with a drill bit for the upright detent and voila, it works, bloomin marvellous!

Now all I've got to worry about is Peters comment that the sight will be calibrated incorrectly, phew, always something.

So, thanks for getting this thread up and attem, it saved my day.

[Peter Laidler]

I'm TOTALLY lost and bamboozled now lads ...............! All of my comments so far have been directed at a No4 Mk1/2 with a backsight axis pin that fouls the bolt head!

[Thunderbox]

Hi Thunderbox, Just looking at your pic of the sight pivot pin in place, at the risk of sounding like a twit, it seems to have a larger diameter than usual, and if so would that close the gap enough to cause the problem? My pin dia is .1425`, and the very small clearance under the pin to bolthead (on the 6 just cos it was handy and fits the 55 too) is .026.?

Hi RJW,

No - the pins & holes are completely standard. I tried about twenty pins and sights combinations, in case there was some manufacturing variation. I tried the same with bolt heads, because some have slightly flatter extractor housings. At any one time I have about thirty other complete No4s and about 50 loose bolts, so I have a good number of parts to test-swap in cases like this.

[jmoore]

I'm TOTALLY lost and bamboozled now lads ...............! All of my comments so far have been directed at a No4 Mk1/2 with a backsight axis pin that fouls the bolt head!

Sorry about that. RJW's rear sight drama centered around a No1 MkVI if I'm remembering correctly and the issue sort of resurfaced here. Now, back to Thunderbox's program...

[Peter Laidler]

I'm out of it........ I've lost the plot, even with the body drawings!

[RJW NZ]

I'm TOTALLY lost and bamboozled now lads ...............! All of my comments so far have been directed at a No4 Mk1/2 with a backsight axis pin that fouls the bolt head!

The bamboozler exposed;
My fault I'm afraid, it got started when I saw the thread from someone with the same problem I was having, ie a rifle with a low sight pin, the difference being it turns out that early rifles having a low sight pin was a known situation here, it just took me a long time to find that out, and then to come up with a way to get a workable sight on the rifle. The difference of course turns out to be that an A serial receiver is not the cause of Thunderbox's the problem, although it was a reasonable thort to raise at the time.