Well US Army mortars tend to be 60-107mm in calibre and designed for anti-infantry use while fireworks are generally designed for aesthetic effects. There is c

Well US Army mortars tend to be 60-107mm in calibre and designed for anti-infantry use while fireworks are generally designed for aesthetic effects. There is certainly some overlap in the capability of fireworks and mortars to render damage to individuals and groups but this is generally a very limited shared range of effect, with mortars being explicitly designed to kill or incapacitate human targets.