Quote Originally Posted by Benelli B76 View Post
See...

https://forum.vintageairgunsgallery....fle/#post-1695
Thank you,I had had a look at that, but the BSV comment above seems to apply. Most of the late series seem to have the knurled nut, but one, a 6th batch, has a screw almost identical to mine. Sadly, the text says this is a replacement! I don't want tro get one made unless I am sure it is right, so I suppose I shall just have to live with the scew which is on it now.