Quote Originally Posted by Geezer View Post
Diana chopped and changed its rifle rear sights a bit. It can be confusing. I don’t claim to have all the answers.

I am confident (though not 100% sure) that should take the plastic (but good) rear sight also used on the model 5 and 6 pistols and some 1970s model 35s and into the 1980s on the cheaper models. Chambers has them for around £20 (Protek doubtless do as well), but listed under the pistols.
Thank you for that advice, I'll look into it.