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The SR-47 is a rifle designed by Knight's Armaments Co. It is based on the M4 carbine, and is modified to fire Russian 7.62x39mm cartridges from an AK-47 mag. The purpose of the weapon is to allow special forces to resupply from enemy ammunition The obvious next step would be the SR-74, capable of using 5.45x39mm AK-74 mags. This addon provides both weapons with Trijicon ACOG scopes attached, and new infantry units for each rifle.