Handgun Actions | Handgun 101 with Top Shot Chris Cheng

This video breaks down the fundamental handgun actions: single action (SA) and double action (DA). Chris Cheng explains that SA requires the hammer to be pre-cocked, with the trigger pull releasing it, while DA cocks and releases the hammer with a single trigger pull. The video highlights the difference in trigger pull weight between SA (lighter) and DA (heavier), noting the safety benefits of the heavier DA pull for law enforcement.

Quick Summary

Handgun actions are either single action (SA), where the trigger only releases a pre-cocked hammer, or double action (DA), where the trigger cocks and releases the hammer. DA/SA pistols combine both, with the first shot being DA and subsequent shots SA. DA triggers are heavier (8-12 lbs) for safety, while SA triggers are lighter (5.5-6 lbs).

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 is the difference between single action and double action triggers?

In single action, the trigger only releases the hammer/firing pin. In double action, the trigger first cocks the hammer/firing pin and then releases it. Double action trigger pulls are typically heavier than single action pulls.

What is a DA/SA handgun?

A DA/SA (Double Action/Single Action) handgun fires the first shot in double action mode, meaning the trigger cocks and releases the hammer. Subsequent shots are in single action because the slide cycling re-cocks the hammer.

Why do double action triggers have a heavier pull?

The heavier double action trigger pull acts as a safety mechanism, especially under stress. It helps prevent accidental discharges by requiring more deliberate force to fire the weapon on the first shot.

What are the trigger pull weights for SA and DA?

Single action trigger pulls are generally lighter, around 5.5 to 6 pounds. Double action trigger pulls are heavier, typically ranging from 8 to 12 pounds, requiring more force to operate.

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