I believe that Styer stuff will work in the 9mm Largo 9x21 guns. But not in a 9x19 9mm Luger

I believe that this ammunition was made to be used in Austria's WW2-era, military-issue sidearm, the 9mm Steyr Hahn M1911 pistol. This SA semi-auto pistol loads via stripper clips into a fixed magazine in the pistol's grip. Its locked breech depends upon a rotating barrel. Its safety lever is in a particularly awkward location.

Thanks steve, DJ. didnt know about that pistol steve. I will have to do some research and reading to report back to the lovely lady who owns the store.

9mm Steyr Hahn M1911 semi-auto pistol
Description and history: www.recguns.com/Sources/IIIC2t1.html
Photos, including field stripped: http://tenring.blogspot.com/2006/05/one-from-vault.html

Thanks STeve.