The unnamed LeDealer has indeed had them in stock at some point, I got one there a couple of years ago. That cheap little mount fit perfectly on the 11mm dovetails on a Baikal .30-06 that I had, held up well to several hundred rounds of full-power loads, never slipped or lost zero. It wasn't bad looking, but wouldn't be my choice for a high-grade gun. It's aluminum, and the finish (anodized?) was easily scratched. I never tried it on a 3/8" dovetail, don't know how well that would work, if at all.
John