The SKS is a Soviet semi-automatic carbine chambered for the 7.62×39mm round, designed in 1943 by Sergei Gavrilovich Simonov. Many surplus SKS rifles were disposed of in the 1990s, and photographs and stories exist of SKS rifles used by guerrilla fighters in Bosnia, Somalia and throughout Africa and Southeast Asia[8] during the 1990s and well into the 21st century. Several African, Asian, and Middle Eastern armies still use the SKS. Russian SKS's had stocks of Arctic Birch (or Russian Birch), and the Chinese were of Catalpa wood (Chu wood).[9] SKS carbines have also made appearances in recent conflicts in Africa, Afghanistan, and Iraq. Today, the SKS is in service with Cambodia, Laos, China, North Korea and Vietnam, as well as many other countries in Africa. SKS rifles have been seen in the hands of pro-Ukrainian forces in eastern Ukraine as of May 2014.