The 22UpLULA™ loader & unloader is made for loading .22LR wide body mags. > 1/2",like .22LR 1911 mags and other .22LR converted mags. It has the body width of the UpLULA™ and has a narrower metal beak designed for .22LR rounds.
Big Book Catalog, Issue:70, Page:140
Big Book Catalog, Issue:70, Page:365