Don’t Blow-Up Your Can

Published on December 22, 2022
Duration: 9:43

This guide details best practices for mounting firearm suppressors, emphasizing the critical role of Rocksett adhesive and proper shim usage. The speaker, drawing on extensive experience, highlights the pitfalls of relying solely on torque and the importance of checking bore concentricity with an alignment rod. It covers both direct thread and quick-detach systems, explaining how tolerance stacking can lead to misalignment and potential baffle strikes.

Quick Summary

For secure suppressor mounting, use Rocksett engineering adhesive due to its high-temperature resistance, and always employ suppressor shims for proper alignment. Never use crush washers. Crucially, verify bore concentricity with a caliber-specific alignment rod to prevent baffle strikes, especially with multi-part quick-detach systems prone to tolerance stacking.

Chapters

  1. 00:00Sponsor: Acre Gold
  2. 00:41Suppressor Mounting Best Practices
  3. 01:24Tool 1: Rocksett Adhesive
  4. 01:39Why Rocksett for Suppressors
  5. 02:06Limitations of Torque Alone
  6. 02:52Tool 2: Suppressor Shims
  7. 03:26Proper Suppressor Mounting Formula
  8. 03:41Tool 3: Alignment Check Rod
  9. 04:17Ensuring Concentricity
  10. 04:38Affiliate Products & Support
  11. 04:58Direct Thread vs. Quick Detach
  12. 05:49Direct Thread Alignment Demo
  13. 06:01Quick Detach Tolerance Stacking Demo
  14. 07:34Understanding Tolerance Stacking
  15. 08:50Avoid Thread Pitch Converters

Frequently Asked Questions

What is the best adhesive for mounting a firearm suppressor?

Rocksett engineering adhesive is highly recommended for suppressor mounting due to its superior high-temperature resistance. Unlike common threadlockers like Loctite, Rocksett can withstand the extreme heat generated by continuous suppressor use, preventing the mount from loosening.

Why are suppressor shims important, and what should be avoided?

Suppressor shims are crucial for proper timing and alignment of the suppressor. You should strictly avoid using crush washers, even if they come with the mount, as they can lead to misalignment and potential baffle strikes. Proper shim placement is key to a secure and concentric mount.

How can I ensure my suppressor is properly aligned with the barrel?

Use a caliber-specific alignment rod, such as a 7.62mm rod, to check for concentricity. Insert the rod through the suppressor bore and ensure it passes through without touching the end cap. This visual check confirms the suppressor bore is aligned with the barrel bore, preventing baffle strikes.

What is tolerance stacking and how does it affect suppressor mounting?

Tolerance stacking is the accumulation of small dimensional variations in multi-part systems, like quick-detach mounts. This can push the suppressor off-axis, leading to misalignment. It's often exacerbated by improper shim placement or the use of thread pitch converters.

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