Noun
trigger guard (plural trigger guards)
A thin loop surrounding the trigger of a weapon to keep it from accidental discharge.
This machine pistol has a horizontal rail in front of the trigger guard through which a spare magazine can be attached and be used as a foregrip for better control during full automatic firing. Source: Internet
The dog tags hang from the rifle's handle or trigger guard. Source: Internet
Keep fingers off the trigger Finger off the trigger and outside the trigger guard This rule is intended to prevent an undesired discharge. Source: Internet
The trigger guard and area above the trigger of a firearm presents a natural point for a handler to keep their finger out straight alongside the weapon, so as not to violate this rule. Source: Internet