Double Action Vs Single Action, What's the difference?

Published on June 24, 2022
Duration: 1:00

This guide explains the fundamental differences between Double Action (DA) and Single Action (SA) trigger mechanisms, using a Ruger SP101 as an example. It details the mechanics of each, emphasizing the longer, heavier pull of DA for safety and the shorter, lighter pull of SA for accuracy. The instruction comes from a knowledgeable source, highlighting safety protocols and practical application contexts.

Quick Summary

Double Action (DA) triggers perform two actions: cocking and releasing the hammer, resulting in a long, heavy pull ideal for safety in concealed carry. Single Action (SA) triggers perform one action: releasing a pre-cocked hammer, offering a light, short pull beneficial for accuracy. Always ensure firearms are unloaded before demonstrating trigger functions.

Chapters

  1. 00:00Introduction and Safety Check
  2. 00:07Double Action (DA) Mechanics
  3. 00:23Single Action (SA) Mechanics
  4. 00:34Use Cases and Safety Warnings

Frequently Asked Questions

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

The primary difference lies in the trigger's function. A Double Action (DA) trigger performs two actions: cocking the hammer and releasing it. A Single Action (SA) trigger performs only one action: releasing an already cocked hammer, resulting in a lighter pull.

Which trigger type is better for concealed carry: DA or SA?

Double Action (DA) is generally recommended for concealed carry and duty use. This is because the hammer-down position requires a longer, heavier trigger pull, which is considered safer and reduces the risk of accidental discharge.

Why is Single Action (SA) preferred for accuracy?

Single Action (SA) triggers are preferred for accuracy because they only release a pre-cocked hammer. This results in a much lighter and shorter trigger pull, allowing for a more precise shot with less disturbance to the firearm's aim.

What safety precautions should be taken when demonstrating trigger mechanisms?

Always ensure the firearm is completely unloaded before manipulating the trigger or internal mechanisms. Be cautious when manually cocking or decocking, as a slip can lead to an accidental discharge.

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