Medium machine gun
A medium machine gun (MMG), in modern terms, usually refers to a belt-fed machine gun firing a full-powered rifle cartridge, and is considered "medium" in weight (15–40 lb or 6.8–18.1 kg). Medium machine guns are light enough to be infantry-portable by a single individual (as opposed to a heavy machine gun, which completely relies on mounting onto a weapons platform for operational stability and mobility and is typically carried separate from the tripod by a second soldier).