Handgun Actions | Handgun 101 with Top Shot Chris Cheng

This guide, informed by Top Shot Champion Chris Cheng, breaks down the fundamental handgun actions: Single Action (SA), Double Action (DA), and the common DA/SA. It explains how the trigger operates the firing mechanism in each mode, highlighting the differences in trigger pull weight and function. Understanding these actions is crucial for safe and effective firearm handling.

Quick Summary

Handgun actions are categorized as Single Action (SA), Double Action (DA), or DA/SA. SA triggers perform one function (release), while DA triggers perform two (cock and release). DA/SA pistols start with a DA pull for safety and transition to lighter SA pulls after the first shot, a system favored for its balance of safety and shootability.

Chapters

  1. 00:00Introduction to Handgun Actions
  2. 00:13Single Action (SA) Explained
  3. 00:49Double Action (DA) Explained
  4. 01:27DA/SA Transition and Trigger Weight
  5. 02:15Safety Benefits and Conclusion

Frequently Asked Questions

What are the main types of handgun actions?

The primary handgun actions are Single Action (SA), where the trigger only releases the hammer/striker; Double Action (DA), where the trigger cocks and releases the hammer/striker; and DA/SA, which combines both, starting with a DA pull and subsequent SA pulls.

What is the difference between Single Action and Double Action triggers?

A Single Action trigger performs one function: releasing the hammer or striker. A Double Action trigger performs two functions: cocking the hammer or striker and then releasing it. DA triggers are typically heavier and have a longer pull.

Why is the Double Action trigger pull on the first shot considered a safety feature?

The heavier and longer pull of a Double Action trigger on the first shot of a DA/SA pistol acts as a safety measure, reducing the likelihood of accidental discharge, especially under stress, making it favored by some law enforcement and military units.

How does the trigger action change on a DA/SA pistol after the first shot?

On a DA/SA pistol, after the first shot is fired in Double Action mode, the firearm's slide cycles. This action automatically cocks the hammer, so all subsequent shots are fired in Single Action mode, which has a lighter and shorter trigger pull.

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