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Trigger guard
Firearm part surrounding the trigger to hinder accidental discharge / From Wikipedia, the free encyclopedia
A trigger guard is a protective loop surrounding the trigger of a firearm designed to prevent unwanted contact with the trigger, which may cause an accidental discharge.[1] Other devices that use a trigger-like actuator mechanism, such as inhalers, crossbows and power tools, may also have trigger guards.
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On rifles with a bottom metal, the trigger guard is often incorporated as part of the bottom metal.