bump stock
noun [ C ] uk/ˈbʌmp ˌstɒk/ us/ˈbʌmp ˌstɑːk/ (also bump fire, /ˈbʌmp ˌfaɪər/ /ˈbʌmp ˌfaɪr/ bump fire stock, /ˈbʌmp ˌfaɪə ˌstɒk/ /ˈbʌmp ˌfaɪr ˌstɑːk/)
撞火枪托（一种将半自动步枪改装为类似全自动步枪的装置，方便连续发射子弹）
a part that can be attached to the handle of a gun that makes it able to fire repeatedly more quickly, in a similar way to an automatic weapon
The Department of Justice announced plans to restrict the sale of bump stocks. 美国司法部宣布了限制销售撞火枪托的计划。
- More examples
- The shooter used a modification called a bump stock to make his rifles even deadlier.
- A bump fire stock attaches to a semi-automatic rifle to increase the firing rate.
- Some have called for legislation banning bump stocks altogether.