RPK

The RPK, Ruchnoy Pulemyot Kalashnikova, was developed in the early 1960s as the light machine gun partner to the AKM assault rifle. Modern Firearms notes that in 1961 the Soviet Army selected the Kalashnikov system, combining a modified AKM and the RPK squad automatic weapon. The goal was standardization: similar controls, ammunition, magazines, and manufacturing methods across the infantry squad. RPK replaced older RPD weapons in many units and became a common Warsaw Pact light machine gun.

Technically, the RPK is a long-barreled, reinforced Kalashnikov-pattern automatic rifle/light machine gun. It fires 7.62x39 mm ammunition, uses box or drum magazines, and includes a bipod and heavier receiver features to support sustained squad fire. It is lighter and simpler than belt-fed machine guns, but its magazine feed limits sustained fire compared with PKM-class weapons. The design's advantage is parts and handling commonality with AK rifles, making it easy for Soviet infantry to train and maintain.

Operationally, the RPK gives infantry squads a familiar automatic weapon with greater range and stability than standard rifles. It has been exported, copied, and adapted widely, including RPK-74 and later variants. Its battlefield role is suppressive and supporting fire, but not the sustained belt-fed fire of a GPMG. The RPK remains relevant in low-intensity conflicts and reserve forces because it is rugged, familiar, and compatible with Kalashnikov logistics.