Jack Rowe, Master Gunsmith Series, Trigger Pull. Part 2 of 3.

Published on May 30, 2012
Duration: 10:26

This guide details a gunsmithing technique for lengthening a sear nose, a critical component for proper trigger function. Master Gunsmith Jack Rowe demonstrates how to correct a sear that is too short by carefully heating and hammering the component. This process requires precision and an understanding of firearm mechanics to avoid further issues.

Quick Summary

Master Gunsmith Jack Rowe demonstrates advanced techniques for correcting trigger pull by modifying the sear. He explains that shortening the sear nose can cause misfires and disrupt ejector timing. The correction involves heating the sear nose and carefully hammering it to extend its length, a precise metalworking process.

Chapters

  1. 00:00Introduction & Hammer Bent
  2. 01:31Consequences of Shortening Sear
  3. 03:51Ejector Timing Issues
  4. 05:46Lengthening the Sear Nose

Frequently Asked Questions

What is the primary risk of shortening a sear nose?

Shortening a sear nose can prevent the hammer from cocking fully, reducing striker travel and mainspring compression. This results in a weaker firing pin strike and can lead to misfires, compromising the firearm's reliability.

How can a gunsmith correct a sear that is too short?

A gunsmith can correct a short sear by 'drawing out' the metal. This involves heating the sear nose to a red glow and carefully hammering it on an anvil to extend its length, typically by about 1/32nd of an inch.

Why is modifying the hammer bent considered a secondary adjustment?

Modifying the hammer bent is often a secondary adjustment because it can be less precise than working on the sear. Master gunsmiths typically prioritize sear adjustments for trigger pull corrections due to their direct impact on engagement and timing.

What firearm component is critical for proper trigger pull and hammer engagement?

The sear is a critical component. Its interaction with the hammer, specifically the length and angle of the sear nose, directly influences the trigger pull weight and the hammer's ability to hold and release reliably.

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