装了这个bump stock的枪，是不是机关枪？
两个大法官争论，赞同解禁的说：
“Nothing changes when a semiautomatic rifle is equipped with a bump stock,” Thomas wrote. “Between every shot, the shooter must release pressure from the trigger and allow it to reset before reengaging the trigger for another shot.”
反对解禁的说：
“今天，法院将撞火枪托重新交回了人们的手中，甚至是坏人的手中。”在提到是否应将其归类为机关枪时，她补充称，“我看到一只走路像鸭子、游泳像鸭子、叫声像鸭子的鸟时，我会称那只鸟为鸭子。”
“When I see a bird that walks like a duck, swims like a duck, and quacks like a duck, I call that bird a duck,” she wrote. “A bump-stock-equipped semiautomatic rifle fires ‘automatically more than one shot, without manual reloading, by a single function of the trigger.’ Because I, like Congress, call that a machinegun, I respectfully dissent.”
