I don't have any experience with the Auray windscreens, but I've worked with the MOVO WST-50 windscreens on many occasions, as have others on the forum.
I just ordered another pair for my new Line Audio CM4 mics and MOVO seems to have changed the dimensions since my last purchase, several years ago.
I've attached two photos showing the older, larger windscreen, and the newer, smaller windscreen. Insertion depth on the larger model is 2-5/8", while the smaller new version is 2-1/4". Both are model "WST50", and designed for mics with diameters 18-24 mm.
I'm guessing that you might want to order both and see which one fits and performs best with your Naks.