In Korea in the 80s we took the .50s off the ring mounts on our 2.5 Ton trucks and broke them down into 4-man loads: receiver; barrel and a can of ammo; tripod, T&E and a can of ammo; and two cans of ammo. These were humped in packs, on frames, or over shoulders, as only foot infantry can.
Fellas were amazed to watch headquarters dogs hump those bitches up and down the yamas (hills and ridges) just like toting mortars. Even more amazing was watching half-inch death raking over a target from the support line. Add another dude and you hump in the TVS-5 Starlight or a thermal.
"Nobody expects the Spanish Inquisition."