特朗普政府的结论是，撞击式储存装置以及类似的装置模仿的是“机关枪”，因此是非法的。除非有其他法律规定外，该规则在90天内生效。
The Trump administration has concluded that bump stock devices, and those that are similar, mimic "machine guns" and are therefore illegal. The rule takes effect in 90 days, barring legal action.