Smyth Busters: Can I Thread a Muzzle By Hand?

Published on January 26, 2021
Duration: 2:49

This guide details the process of hand-threading muzzle threads using a die and wrench, as demonstrated by Brownells experts. It highlights the critical need for precision, especially for suppressor alignment, and advises that hand-threading is generally not recommended for most applications due to potential concentricity issues. The experts recommend professional gunsmithing or lathe use for accurate results.

Quick Summary

Brownells experts advise against hand-threading rifle muzzles for most applications due to precision and concentricity issues. While kits exist, hand-cut threads often fail alignment tests for suppressors. AK barrels may be an exception. For safe and accurate results, use a lathe or professional gunsmith.

Chapters

  1. 00:00Introduction to Hand-Threading Muzzles
  2. 00:21Problems with Hand-Threading
  3. 00:56Tools and Alignment Issues
  4. 01:26Exceptions: AK Barrels
  5. 02:14Conclusion and Recommendations

Frequently Asked Questions

Can you thread a rifle muzzle by hand?

While hand-threading kits are available, Brownells experts caution that it's generally a bad idea for most applications. Hand-cut threads often lack the necessary concentricity for precise muzzle device alignment, especially for suppressors, and cannot accurately cut the required shoulder.

What are the main problems with hand-threading a muzzle?

The primary issues with hand-threading are the lack of precision and the inability to guarantee concentricity. Barrels are often not perfectly concentric, and hand dies cannot accurately cut the shoulder needed for proper muzzle device indexing, leading to potential alignment problems.

Are there any exceptions where hand-threading a muzzle is acceptable?

Yes, AK-47 barrels can sometimes be an exception. This is because they are often pre-turned to the correct diameter, and many AK muzzle brakes do not require the same high level of precision as suppressors.

What is the recommended method for threading a muzzle?

For reliable and safe muzzle threading, especially when planning to attach a suppressor, the experts strongly recommend using a lathe or hiring a professional gunsmith. This ensures the threads are concentric and properly indexed.

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