Even assuming the lowest possible tech level, the actual warhead of an asset management weapon only comes in at about six tons (roughly two tons per megaton, plus a few spare kilos), which is pretty well in the range for air dropped ordnance from an aerofighter.
It would be a big bomb, no doubt, but probably doable on a medium airframe.
But then, a five hundred kiloton (peacemaker) warhead would only weigh one ton, and even that would be overkill for almost anything you'd want to use it on, short of an assured kill weapon against any WarShip you could expect to meet. Even in strategic warfare, megaton yield warheads aren't considered all that valuable compared to larger numbers of smaller warheads.
Anything smaller than that should easily slot in as an air dropped bomb.