Josef Seifert was one of the major citizens of Preßburg / Pozsony. His aegis went far beyond guns. He was not a gunsmith, but of course employed some. He was a merchant-at-large.

His obituary is worthwhile to read, on page 4 of the newpaper:
https://epa.oszk.hu/05800/05864/08572/pdf/EPA05864_westungarischer_grenzbote_1915_15003.pdf

As you can see, in 1915, his son Karl was already the boss of the company, which he has then continued under new political conditions in - then - (Czecho)Slowakia well into the 1930s.