Quote Originally Posted by Geezer View Post
I feel fulfilled.

You’re right - it’s a pop-up breech. I’d assumed it was a badly-drawn rear sight with protective wings.

Reading the translation, it can be read (though is open to interpretation) to suggest that the Barton was the D22 style, the Redcastle the 25, both described as carbines, and then there was the u/l rifle.
Not sure I agree with this interpretation. Why would the say "also" instead of mentioning the Diana-type guns in the first paragraph? And the Fabarm website blurb says the Flobert guns were carbines.

This may stay a mystery until some contemporary literature emerges... Is there an Italian airgun forum?