Mauser-Koka
The Mauser-Koka was a Serbian service rifle created in the late 19th century.History
In 1880, Serbian Major Kosta "Koka" Milovanović developed an updated version of the Mauser [Model 1871], still single-shot, but chambered in its unique 10.15×63mmR cartridge. It had unique additions in that it had a bolt guide and the "progressive rifling" that was developed by Koka. The Kingdom of Serbia adopted the rifle in 1880. It was designated Serbian Model 1878/80, also known as Mauser-Koka, Mauser-Milovanović, and known in Serbian as Kokinka. The grooves reduced in diameter from breech to muzzle. The muzzle velocity of the Mauser-Milanović was. It saw first combat in the Serbo-Bulgarian War. Approximately 110,000 Mauser-Milovanović rifles entered the Serbian arsenal. It was further developed in 1907.Variants
Mauser-Koka 1884
The Mauser Models 1884 "Artillery & Cavalry Carbine" were produced in 1884 in 4,000 units each at the Oberndorf plant for the use of the Serbian cavalry and Artillery. They were based on the M71/84 and had a five-round tubular magazine. By 1914, only 126 Cavalry & 815 Artillery models were left in the military's possession. In 1937, all remaining Model 1884 carbines were converted to the 1870s vintage 11×59mmR Gras cartridge, which was in good supply in Yugoslav Army depots after the Balkan War.Mauser-Koka-Đurić
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. An additional locking lug was added by milling the receiver on a lathe around 1mm, then heating the locking lug collar red-hot and fitting to the cold receiver. Both the old and new guns saw action in the Balkan Wars and World War I. The converted M80/07 are often referred to as "Đurić Mausers". The M.80/07 C rifles captured from the Royal Yugoslav Army by the Nazi Germany during the World War II were designated Gewehr 223 , while surplus M.78/80 rifles that was still in storage were designated Gewehr 352 .