Raimey,

Franz Umfahrer closed down in 1876. Leopold Gasser was able to turn his small revolver shop into a proper factory when the Austro-Hungarian military adopted his patented revolver in 1870. As far as I know all of his revolvers were made in Vienna (Ottakring), the St. P÷lten factory being a foundry for making parts in the rough. Besides making revolvers, L. Gasser offered a full range of sporting arms.
I wouldn't know if Johann Haberda was formaly represented in Steiermark but his guns are not unknown here.

With kind regards,
Jani