In 1880, Serbian Major Kosta "Koka" Milovanović (Коста "Кока" Миловановић) developed an updated version of the Mauser Model 1871, still single-shot, but chambered in its unique 10.15×63R caliber.

It had unique additions in that it had a bolt guide (much like the M1870 Italian Vetterli) and the "progressive rifling" that was developed by Koka.

[3] In the late 1930s, all remaining Model 1884 carbines were converted to the 1870s vintage 13.78mm "LAK" cartridge, which was in good supply in Yugoslav Army depots.

[4] Starting 1907, about half of the Mauser-Koka inventory was converted in Kragujevac to shoot the 7×57mm from a 5-shot magazine; the new barrels were purchased from Steyr.

[5] The M80/07 C rifles captured from the Royal Yugoslav Army by the Nazi Germany during the World War II were designated Gewehr 223 (j).