Wirnsberger was sent to the Eastern Front in September 1942, and fought with both a K-98 and a Gewehr 43 after sniper training in the Seetaler Alpen.
The Zastava M98/48 (often called Mod.98/48, Model. 98/48, Yugo K98) was a refurbished bolt action rifle, chambered for the 7.92×57mm Mauser cartridge that was temporary adopted in the years after WWII by the Yugoslav People's Army.