DA/SA Revolvers Don't Have Sears!?!..Here is How the DA/SA Sear Works! (Boring Technical Video)

Published on March 10, 2026
Duration: 6:57

This guide explains the sear mechanism in single-action revolvers, as detailed by The Yankee Marshal. It clarifies that revolvers do have sears, which are the engagement points between the hammer and trigger. The process involves cocking the hammer, which pulls the trigger until the trigger's leg locks into a notch on the hammer. Pulling the trigger further disengages this lock, allowing the hammer to fall and fire the weapon. The guide emphasizes the simplicity of this mechanism compared to semi-automatic firearms.

Quick Summary

Revolvers do have a sear, which is the engagement point between the hammer and trigger that holds the hammer back when cocked. In single-action operation, cocking the hammer pulls the trigger until the trigger's leg locks into a notch on the hammer. Pulling the trigger further disengages this lock, allowing the hammer to fall and fire the weapon. This mechanism is considered simpler than in many semi-automatic pistols.

Chapters

  1. 00:00Introduction & Viewer Questions
  2. 00:25Revolver Passion & Sear Focus
  3. 00:48Addressing Sear Confusion
  4. 01:29Refuting 'No Sear' Claims
  5. 01:55Visualizing Hammer & Trigger
  6. 02:09Mainspring's Role
  7. 02:37Identifying the Sear
  8. 03:02Cocking for Single Action
  9. 03:28Hammer Cocked, Trigger Locks
  10. 04:04Firing Sequence
  11. 05:06Trigger Reset & Cycle
  12. 05:30Simplicity of Revolver Sear

Frequently Asked Questions

Do revolvers have a sear?

Yes, revolvers absolutely have a sear. It's the critical engagement point between the hammer and the trigger that holds the hammer back when cocked in single-action mode. It's often an integrated part of the hammer and trigger components themselves.

How does the sear work in a single-action revolver?

When you cock the hammer, it pulls the trigger rearward. The trigger's leg then engages a notch on the hammer, holding it in the cocked position. Pulling the trigger further disengages this lock, allowing the mainspring to drive the hammer forward to fire.

What are the main components involved in a revolver's sear mechanism?

The primary components are the hammer and the trigger. The mainspring provides the necessary force. The sear itself is the specific point of engagement, typically a notch on the hammer that the trigger engages with.

Is the sear mechanism in revolvers complex?

According to The Yankee Marshal, the sear mechanism in single-action revolvers is relatively simple, often less complex than the mechanisms found in many semi-automatic pistols. The interaction is direct and relies on precise engagement points.

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