Single vs Double Action

Published on March 28, 2024
Duration: 0:55

This video clearly explains the fundamental differences between single-action and double-action triggers in firearms. It defines each action, highlighting that double-action performs both cocking and firing in one pull, while single-action requires the hammer to be pre-cocked. The content also touches on variations like DA/SA and DAO, and SAO autoloaders, using specific examples like the Sig P210.

Quick Summary

A double-action trigger performs two functions: it cocks the hammer and then releases it to fire the gun in a single pull. A single-action trigger requires the hammer or striker to be in the cocked position first; its only job is to release that stored energy.

Chapters

  1. 00:00Double Action Trigger Explained
  2. 00:11Single Action Trigger Explained
  3. 00:22DA/SA and DAO Variations
  4. 00:37Single Action Only (SAO) Autoloaders

Frequently Asked Questions

What is the main difference between single-action and double-action triggers?

A double-action trigger cocks and fires the gun in one pull. A single-action trigger only releases the hammer/striker, requiring it to be pre-cocked first.

Can a firearm have both single and double-action modes?

Yes, many traditional revolvers and some autoloaders are DA/SA (Double Action/Single Action), offering both modes. Some are exclusively DAO (Double Action Only) or SAO (Single Action Only).

What does 'Single Action Only' (SAO) mean for a pistol?

SAO pistols require the hammer to be manually cocked, or the slide to be racked, before the trigger can be pulled to fire. The trigger's sole function is releasing the hammer.

What is a Double Action Only (DAO) firearm?

A DAO firearm's trigger performs both the cocking and firing functions in a single pull. These often lack external hammers, like some hammerless revolvers.

Related News

All News →

More Reviews Videos You Might Like

More from JaredAF

View all →