The Mosin-Nagant is a series of bolt-action rifles used by the Russian Empire and later the Soviet Union. It was their main rifle throughout the Russo-Japanese War, World War I and World War II. After World War II, it was replaced by the SKS rifle. It was also commonly used by the USSR's allies during the Cold War, and it is still used today by some smaller militaries. It is also popular with civilians due to its cheap price. It is the most produced bolt-action rifle of all-time. More than 37 million Mosin-Nagants were made.