Originally Posted by Peter Laidlericon View Post
I notice that the backsight ears are missing too. There's a problem because the axis pin holes were used as the datum and jig fixture for many machining operations on the partially finished body, including positioning it to index the breeching up thread

Did we ever get to the bottom of the rifle photographed here with the backsight axis pins apparently (but impossibly....) bored out too low down from new. It was on the forum some months ago now

I just went an compared the no1mk6 and a 55 mk2, the height difference in the same place being .070 inch.