Constitutionality of banning certain types of bullets

[True Federalist (진정한 연방 주의자)]

Presuming that the usual weaseling idea that weapons with no military use are not protected (thereby justifying bans on sawed-off shotguns and switchblades) then banning explosive bullets would be constitutional.  There's a international treaty (possibly one of the Geneva's) that bans the use of them in war.