The Mosin–Nagant is a bolt-action, internal magazine-fed, military rifle used by the armed forces of the Russian Empire, the Soviet Union and various other nations.
When trials concluded in 1891, the units which tested the rifles were split in their decision. The main disadvantages of Nagant's rifle were the following: more complicated mechanism, long and tiresome procedure of disassembling (which required special instruments—it was necessary to unscrew two screws). Mosin's rifle was mainly criticised for lower quality of manufacture and of materials used which resulted in a slightly larger number of stoppages. The Commission voted 14 to 10 to approve Nagant's rifle. However, the head of the commission, General Chagin, insisted on subsequent trials held under the Commission's supervision during which Mosin's rifle showed its advantages, leading to its selection over the Nagant.