The Mosin-Nagant, Model 1891/1930, was the standard-issue bolt-action rifle of the Imperial Army throughout the First World War, served both White Russian and Red Army soldiers in the Russian Civil War, and saw frontline combat throughout the Second World War until its conclusion. Firing the 7.62 x 54R rifle cartridge ("R" for "rimmed"), The Mosin-Nagant was hard-hitting, exceptionally simple to maintain, quite accurate, and reliable under almost all conditions. The rifle fed from a five-round integral magazine, which could be loaded from five-round stripper clips. Even without the bayonet mounted, the Mosin-Nagant was the second-longest standard-issue service rifle fielded in World War Two, behind the Japanese Type 38 rifle. The weapon could be disassembled entirely using the bayonet. Over seventeen million Mosin-Nagant rifles were manufactured during the war, making it the most-manufactured small arm of the war.
While a highly effective weapon, the Mosin-Nagant was far less ergonomic than its rival, the Mauser Karabiner 98 Kurtz. Loading from stripper clips could be difficult, and Russian riflemen learned to lift the topmost round in the stripper clip before pressing down in order to quickly load the weapon. The safety was primitive compared to the Mauser's, and the straight bolt handle made working the bolt more difficult and fitting a scope to a standard rifle impossible. To rectify the latter issue, hand-selected sniper variants incorporated bent bolt handles.
Post-war re-arsenaling of already battle-worn weapons, which sometimes included the re-boring of barrels, mean that while existing rifles today may not shoot as accurately as similar military bolt-taction rifles, the weapons were more than precise enough during the fighting of the time.
In-game, the Mosin-Nagant is issued to Riflemen, Elite Riflemen, Marksmen (as the sniper variant), and the Squad Leader (in Classic Mode), and is one of the most common weapons encountered. It is accurate and effective from medium to long range, and the bayonet (unlocked at Level 25, or unlocked at Level 0 if the player owns Red Orchestra: Ostfront 41-45) allows the weapon to remain somewhat useful in close quarters. Due to the bolt-action, engaging multiple enemies, especially at close range, can be problematic. The player can carry a total of 12 stripper clips of ammunition for the Mosin-Nagant in-game.