Salutations are just not that common in modern Russian. It used to be Gospodin or Sudar (сударь) before the Revolution, but these were forcibly replaced by Tova

Salutations are just not that common in modern Russian. It used to be Gospodin or Sudar (сударь) before the Revolution, but these were forcibly replaced by Tovarish (comrade, or rather - friend). Then after collapse of Soviet Union tovarish died out and neither of old salutations came back. In day to day life if you need to attract someone's attention, you'd use an equivalent of "excuse me", "hey" or "hello". In rare cases people would use "man" (мужчина) or "woman" (женщина), but that's very impersonal and frequently antogonistic, so most people avoid it. In press and written language, it's just the last name, preceded by the position when appropriate. Sometimes they will use gospodin, but that would typically be reserved for pompous occasions and when referring to people at important positions, e.g. a president of a bank. And yet it still looks odd and catches the eye. So in the context of your post it's just Kalashnikov. No gospodin.