Single-Action


A firearm mechanism in which the hammer must be manually cocked before the trigger can release it, common in older revolvers.

Related Terms

Cylinder (Revolver)

The rotating part of a revolver holding multiple chambers of ammunition, advancing with each hamm...

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Double-Action

A firearm mechanism where pulling the trigger cocks and then releases the hammer (common in some ...

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Handgun

A short-barreled firearm (pistol or revolver) designed for one-handed operation; often requires s...

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Sear

The component in a firearm’s trigger group that holds the hammer or striker back until the trigge...

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Trigger Pull

The amount of force needed to fire a shot; heavier or inconsistent triggers can reduce accuracy.

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Auto-Indexing (Revolver)

A revolver feature where cocking the hammer or pulling the trigger automatically rotates the cyli...

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