Early Izhevsk-manufactured Mosin-Nagants used a hex (octagonal) receiver machined from a solid billet. The hex receiver was expensive to produce and was phased out in favor of round receivers during the 1920s and 1930s. Hex receiver Mosin-Nagants are among the most prized variants. Type: Rifle Action: Bolt-Action Caliber: 7.62x54R Capacity: 5 Year introduced: 1891, Russia Weight: 98 oz Overall length: 51.4" Status: Discontinued Military use: Yes Intended use: Military, Collecting