As a veteran who served in two combat support MP companies, I can honestly tell you the "FOBbits" & desk jockeys(aka REMFs
) may not of understood how mech troops or armored units would need ROOM or space to tote ammunition, fuel cans, water, food, commo gear, barb wire(which can rip or tear your flesh in seconds), etc in a combat vehicle.
Smaller rounds or ordinance means more rounds, less recoil(noise & blast) & faster operation.
I'd rather have a 134D mini-gun that fires a 5.56mm or 7.62mm with 5000 round canisters than a 20mm or 40mm with only 250rds.
Clyde Frog
PS; Now, the GI Joe RAM or the motorcycle with a 20mm mini-gun sidecar is a bit much.
Yo Joe!