Why Do Some Handguns Have Two Triggers? Understanding Double-Trigger Firearms
The presence of two triggers on a handgun isn't a common feature, but it does exist in specific firearm designs, primarily older models and those with unique operational mechanisms. Understanding why these double-trigger configurations exist requires examining their historical context and the mechanical functions they facilitate.
The Two Main Reasons for Double Triggers in Handguns
The existence of two triggers generally stems from one of two primary reasons:
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Separate Firing Mechanisms for Different Stages of Operation: Some older designs, particularly double-action/single-action (DA/SA) revolvers and some early semi-automatic pistols, employed a two-trigger system to differentiate between cocking the hammer and subsequently firing the round. The first trigger would cock the hammer (double-action), while the second trigger would release the hammer to fire the round (single-action). This system often resulted in a heavier pull on the first trigger and a lighter pull on the second. This design is less common now with improved DA/SA designs that use a single trigger for both actions.
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Selective Firing Modes: Certain firearms, particularly those designed for specialized roles, might have a two-trigger system to provide distinct firing modes. This isn't a prevalent feature in modern handguns, but some historical or custom-built examples might exist. The triggers could control different functions, such as selecting between single shots and burst fire (though burst fire is extremely rare in handguns).
Beyond the Basics: Why You Don't See Them Often Today
The prevalence of two-trigger handguns is minimal in the contemporary firearms market. Several factors account for this:
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Complexity and Cost: Adding a second trigger increases the mechanical complexity of the firearm. This complexity translates to higher manufacturing costs and potentially increased maintenance requirements. For most manufacturers, the extra cost and complexity don't justify the limited benefits.
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Ergonomics and Ease of Use: A single-trigger system is generally considered more intuitive and ergonomic for the average user. The added complexity of a second trigger can hinder the shooter's speed and accuracy, particularly under stress.
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Advancements in Single-Trigger Designs: Modern firearms technology has allowed for significant improvements in single-trigger DA/SA mechanisms. These designs offer the benefits of both double-action and single-action operation without the need for a second trigger.
Identifying Handguns with Double Triggers
If you encounter a handgun with two triggers, carefully examine the firearm's markings and accompanying documentation to understand its function and operational characteristics. The design is not inherently unsafe, but requires careful understanding before use. Seek expert advice from a qualified firearms instructor or gunsmith if you are unfamiliar with the specific mechanism.
Conclusion
While some historical and specialized handguns feature two triggers, this design is uncommon today due to factors such as complexity, cost, and the advancements in single-trigger firearm technology. Understanding the historical context and functional reasons behind these designs provides valuable insight into firearm evolution. For most shooters, a modern handgun with a single-trigger mechanism offers greater simplicity, ergonomics, and ease of use.
