The Right Way to Swap Our Muzzle Devices (No Damage, No Stress)

Published on April 17, 2026
Duration: 13:10

This guide details the process of removing CMMG's Plan B style muzzle devices, which are secured with Hot Lock thread locker. The video explains that if the device is not heat-cured, it can be removed with a 13/16 inch wrench. However, if heat-cured through shooting or direct application, removal requires soaking in water for at least 30 minutes, potentially followed by a penetrating lubricant. The presenter, Mike from CMMG, emphasizes that heat-curing makes the attachment permanent.

Quick Summary

CMMG secures their Plan B muzzle devices with Hot Lock thread locker. If not heat-cured, these can be removed with a 13/16 inch wrench. However, heat-curing makes them permanent. To remove a heat-cured device, soak it in water for at least 30 minutes, as Hot Lock is water-soluble, and consider using PB Blaster if needed.

Chapters

  1. 00:03Introduction to Muzzle Devices & Suppressors
  2. 00:25Audio & Video Quality Disclaimer
  3. 01:01New SBB & RBB Plan B Muzzle Devices
  4. 01:13Hot Lock Thread Locker Installation
  5. 01:59Heat Curing Muzzle Devices: Permanent Attachment
  6. 03:02Older CMMG Muzzle Devices (Linear Comp, SV0ero Brake)
  7. 03:37Removing Older Muzzle Devices (Crush Washer)
  8. 04:30Introducing New Plan B Style Muzzle Devices (SVB)
  9. 04:51SVB Muzzle Device Installation with Hot Lock
  10. 06:07Removing a Non-Cured SVB Brake
  11. 07:14Attempting to Remove a Heat-Cured SVB Brake
  12. 08:27Phase Two: Removing Heat-Cured Device with Water
  13. 09:15Checking Water Soak Progress (15 Minutes)
  14. 10:00Checking Water Soak Progress (30 Minutes)
  15. 10:26Tips for Home Removal & Barrel Reinforcement
  16. 11:29Effectiveness of Water Soak & PB Blaster
  17. 12:11Summary: When to Remove vs. When to Cure

Frequently Asked Questions

How does CMMG install their Plan B muzzle devices?

CMMG installs their Plan B style muzzle devices, like the SVB, using a thread locking compound called Hot Lock. This is applied to the threads before torquing the device down. They do not typically apply heat during factory installation.

What happens if a muzzle device with Hot Lock is heat-cured?

If a muzzle device secured with Hot Lock is heat-cured, either by shooting the firearm or by applying external heat, it becomes permanently attached. This makes removal significantly more difficult and may require specialized methods.

How can I remove a heat-cured muzzle device secured with Hot Lock?

To remove a heat-cured Hot Lock muzzle device, soak it in water for at least 30 minutes, as the compound is water-soluble. If this is insufficient, a penetrating lubricant like PB Blaster can be used. Using a reaction rod for barrel support is recommended.

Should I remove my muzzle device before shooting?

Yes, if you plan to swap your muzzle device, it's best to remove it before shooting. This prevents the Hot Lock from heat-curing, which would make it permanent and much harder to remove later.

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