double tap

idiomatic broadly

(idiomatic) A tactical shooting technique of pulling the trigger of a weapon twice in quick succession to deliver two shots to the same target zone. / Two shots or bullets such fired.

Japanese Meaning

武器の引き金を連続して二度引き、同一標的に二発の弾丸を素早く発射する戦術的射撃技法 / 連続して発射される二発の弾丸（またはその効果）

What is this buttons?

The instructor emphasized that a well-aimed double tap could quickly stop an active threat.

Google Translation / DeepL Translation

教官は、狙いを定めた二発連続射撃のテクニック（トリガーを素早く二度引いて同じ標的部位に二発を入れること）が、差し迫った脅威を素早く阻止し得ると強調した。

Details

Sense（1）

Sense（2）

Two shots or bullets such fired.

“You said yourself that it looked like a professional hit with a double tap to the head. She could have hired it done and what better alibi than to be in another state when the murder took place,” Danny said.

Google Translation / DeepL Translation