: A "hair trigger" is a firearm trigger that requires very little pressure to fire. In games like Call of Duty or Destiny 2 , this is often an "Origin" or "Perk" that allows for faster follow-up shots.
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However, "Hair Trigger" is a term commonly used in several contexts. Depending on what you are looking for, this guide covers the most likely possibilities: 1. Sound Effects (SFX) & Gaming : A "hair trigger" is a firearm trigger