Discontinued so long ago I never knew they existed until I stumbled across these listings. Caught my eye, because the lowest rings I've actually liked on anything have been Zee Low. I just mocked up my first set on a Fightlite SCR and was able to get a 1-inch LPVO with a particularly tidy ocular bell to cowitness pretty much in line with the front CZ Scorpion Evo sight. I bought three more sets.

If you like small, light carbines meant to use iron sights with small, light scopes, think about picking up a set.

One warning, DO NOT just take them out of the package and start assembling stuff. They need a bunch of deburring in order to avoid tearing up the rail and scope tube. A really small triangular file and some India stones are good for that.

https://www.ebay.com/itm/203511840383

https://www.ebay.com/itm/194224496304