The Quest to """Beat""" the RPG:

RPG Invented
>oh shit we need man-portable firepower
40mm invented
>no range nor lethality but let's double down
M79 invented
>oh shit it's too big
M203 invented
>oh shit it's inaccurate & the gun's too heavy
M320 invented
>oh shit worst of both worlds
M32 invented
>oh shit it's way too heavy
30mm PGS program invented
>still gonna be too heavy and underpowered


And on the opposite end of the spectrum:
RPG Invented
>oh shit we need man-portable anti-vehicle
CG invented
>oh shit it's too heavy
LAW invented
>can't kill shit but let's double down
AT4 invented
>cold war's over, obsolete with no armor to kill
SMAW invented
>oh shit it's just a worse CG, too heavy for Afghanistan
60mm mortar revived
>oh shit it's too slow and heavy for Afghanistan
60mm Handheld Mortar invented
>oh shit mortars are useless without the mount
CG revived
>oh shit it's too heavy for Afghanistan
SMAW-D invented
>oh shit single use isn't enough for suppression
M4 CG invented
>oh shit still heavier than the RPG

Meanwhile RPG
>we made a new warhead type, problem solved