What is double action handgun?

What is a Double Action Handgun?

When it comes to handguns, there are several types of actions that can be found. One of the most common is the double action (DA) handgun. But what exactly is a double action handgun, and how does it differ from other types of handguns?

Definition

A double action handgun is a type of firearm that uses a mechanism that allows the trigger to both cock and release the hammer with a single pull. This means that the handgun can be fired without having to manually cock the hammer, unlike single action (SA) handguns.

How it Works

In a double action handgun, the trigger is connected to the hammer through a mechanism that allows the hammer to be cocked and released simultaneously. When the trigger is pulled, the hammer is cocked, and then released, striking the primer and firing the cartridge. This process is known as "double action" because the trigger performs two functions: cocking and releasing the hammer.

Key Features

Here are some key features that distinguish double action handguns from other types:

• Trigger Reset: Double action handguns typically have a trigger reset, which means that the trigger returns to its original position after the shot is fired. This allows for quick follow-up shots.
• No Manual Cocking: Unlike single action handguns, double action handguns do not require manual cocking of the hammer before firing.
• Heavy Trigger Pull: Double action handguns typically have a heavier trigger pull than single action handguns, which can make them more difficult to shoot accurately.
• Longer Trigger Travel: Double action handguns often have a longer trigger travel than single action handguns, which can make them more difficult to shoot quickly.

Types of Double Action Handguns

There are several types of double action handguns, including:

• Double Action/Single Action (DA/SA): These handguns can be fired in both double action and single action modes. The trigger reset is typically longer in DA mode, and shorter in SA mode.
• Double Action Only (DAO): These handguns can only be fired in double action mode. The trigger reset is typically longer, and the trigger pull is heavier.
• Striker-Fired: These handguns use a striker instead of a hammer to fire the cartridge. The trigger pull is typically lighter, and the trigger reset is shorter.

Advantages and Disadvantages

Here are some advantages and disadvantages of double action handguns:

Advantages:

• Easier to Shoot: Double action handguns can be easier to shoot for beginners, as they do not require manual cocking of the hammer.
• Faster Follow-Up Shots: The trigger reset on double action handguns allows for quick follow-up shots.
• Simplified Operation: Double action handguns are often simpler to operate than single action handguns.

Disadvantages:

• Heavier Trigger Pull: Double action handguns typically have a heavier trigger pull than single action handguns, which can make them more difficult to shoot accurately.
• Longer Trigger Travel: Double action handguns often have a longer trigger travel than single action handguns, which can make them more difficult to shoot quickly.
• Less Accurate: Double action handguns can be less accurate than single action handguns, due to the heavier trigger pull and longer trigger travel.

Comparison Table

Here is a comparison table of double action handguns and single action handguns:

Conclusion

In conclusion, double action handguns are a type of firearm that uses a mechanism that allows the trigger to both cock and release the hammer with a single pull. They have several key features, including trigger reset, no manual cocking, heavy trigger pull, and longer trigger travel. While they have some advantages, such as being easier to shoot and allowing for faster follow-up shots, they also have some disadvantages, such as a heavier trigger pull and longer trigger travel. Ultimately, the choice between a double action handgun and a single action handgun depends on personal preference and shooting style.