What's the difference: Single action only vs Double action pistols.

Published on December 31, 2023
Duration: 1:01

This video explains the fundamental difference between Single Action Only (SAO) and Double Action (DA) pistol operating systems. It highlights that SAO pistols require the hammer to be manually cocked before each shot, while DA pistols can both cock and release the hammer with a single trigger pull, offering a second SA trigger pull after the initial DA stroke. The demonstration uses a Springfield Armory SA35 for SAO and a Sig Sauer P226 MK25 for DA.

Quick Summary

The key difference between Single Action Only (SAO) and Double Action (DA) pistols is the trigger's role. SAO pistols require the hammer to be manually cocked before each shot, with the trigger only releasing it. DA pistols allow the trigger to both cock and release the hammer with a single pull, offering a longer first pull and a subsequent lighter single-action pull.

Chapters

  1. 00:01Introduction: SAO vs DA Pistols
  2. 00:10Springfield Armory SA35: Single Action Only Example
  3. 00:16SAO Hammer Mechanics Explained
  4. 00:28Sig Sauer P226 MK25: Double Action Example
  5. 00:37DA Trigger Mechanics Explained
  6. 00:43Comparing DA and SA Trigger Actions
  7. 00:53Conclusion: Cool Guns and Differences

Frequently Asked Questions

What is the primary difference between a Single Action Only (SAO) and a Double Action (DA) pistol?

The main difference lies in the trigger's function. An SAO pistol's trigger only releases a pre-cocked hammer. A DA pistol's trigger can both cock and release the hammer with a single pull, offering a longer, heavier first trigger pull, and subsequent shots can be fired in single-action mode.

How does the hammer operate in a Single Action Only pistol?

In a Single Action Only (SAO) pistol, the hammer must be manually cocked by the user before each shot. The trigger pull then solely performs the action of releasing this cocked hammer to fire the round.

What are the trigger actions available on a Double Action pistol?

A Double Action (DA) pistol offers two trigger actions. The first pull is a double-action pull, which cocks the hammer and then releases it. After the first shot, if the hammer is manually cocked, subsequent trigger pulls will be single-action, which is typically lighter and shorter.

Can you provide examples of SAO and DA pistols shown in the video?

Yes, the video uses the Springfield Armory SA35 as an example of a Single Action Only (SAO) pistol. The Sig Sauer P226 MK25 is demonstrated as a Double Action (DA) pistol.

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