Usually, a light machine gun is intended to act as a support weapon, in that it can generate a greater volume of continuous automatic fire than the usual firearms carried by infantry soldiers, at the cost of greater weight and higher ammunition consumption.
It is possible to fire a light machine gun from the hip or on the move, but they are usually fired from a prone position, especially when using a bipod. Early light machine guns (especially those derived from automatic rifles, such as the M1918 Browning Automatic Rifle) were sometimes magazine-fed. Some LMGs, such as the Russian RPK, are modifications of existing assault rifle designs. Adaptations generally include a larger magazine, heavier barrel to resist overheating, more robust action to support sustained fire, and often a bipod.
It is possible to fire a light machine gun from the hip or on the move, but they are usually fired from a prone position, especially when using a bipod. Early light machine guns (especially those derived from automatic rifles, such as the M1918 Browning Automatic Rifle) were sometimes magazine-fed. Some LMGs, such as the Russian RPK, are modifications of existing assault rifle designs. Adaptations generally include a larger magazine, heavier barrel to resist overheating, more robust action to support sustained fire, and often a bipod.