Definition of "double-action" [double-action]

• Attributive form of double action (noun)

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• "If you are talking about double-action auto pistols, there are many, including some "double-action-only" types."
• "I think the first double-action auto pistol was the Walther Model PP."
• "This type pistol can be carried with a round in the chamber and have the same degree of safety as the double-action revolver."