This is a Yugoslavian M59 SKS rifle used by a Serbian, in the Croatian or Bosnian Wars. The Serbian shield sh ows its provenance.
The four C's in the shield represent the phrase "Only Unity Saves the Serbs" or Samo sloga Srbina spasava/Само слога Србина спасава in Serbian.
The four C's in the shield represent the phrase "Only Unity Saves the Serbs" or Samo sloga Srbina spasava/Само слога Србина спасава in Serbian.