Should You Use a Crush Washer?

Published on July 8, 2018
Duration: 3:59

This video explains why crush washers are incompatible with silencers due to their tendency to cause misalignment. The host details how crush washers deform and fill thread gaps, potentially leading to baffle strikes on suppressors. He recommends using shim kits for precise muzzle device timing and proper alignment, emphasizing the importance of correct thread pitch and high-temperature thread lockers like Rocksett or Vibra-Tite.

Quick Summary

Crush washers should be avoided with silencers because their uneven deformation causes muzzle device misalignment, which is magnified by the suppressor length, leading to dangerous baffle strikes. Use a shim kit for precise alignment instead.

Chapters

  1. 00:00Intro: Crush Washer vs. Silencer Compatibility
  2. 00:21How Crush Washers Work & Cause Misalignment
  3. 01:05Risks: Baffle Strikes with Suppressors
  4. 01:30The Solution: Using Shim Kits
  5. 02:23Thread Specs: 5/8x24 & 1/2x28
  6. 02:43Installation: Thread Lockers (Rocksett/Vibra-Tite)

Frequently Asked Questions

Why should I avoid using a crush washer with a silencer?

Crush washers deform unevenly, causing slight misalignment of the muzzle device. This misalignment is magnified by the length of a silencer, increasing the risk of dangerous baffle strikes that can destroy the suppressor.

What is the recommended alternative to a crush washer for suppressor installations?

The recommended alternative is a shim kit. Shims allow for precise timing and alignment of muzzle devices like flash hiders, ensuring the suppressor mounts correctly and safely without the risks associated with crush washer deformation.

What type of thread locker should I use for muzzle devices?

For muzzle devices, especially those used with suppressors, use high-temperature locking compounds like Rocksett or green Vibra-Tite. Standard blue Loctite can melt under the heat of suppressed fire, potentially causing the device to loosen.

What are common muzzle device thread pitches?

Common muzzle device thread pitches include 5/8x24, typically used for .30 caliber firearms, and 1/2x28, commonly found on 5.56mm AR-15 platforms. It's crucial to match the thread pitch to your firearm and muzzle device.

More Gunsmithing & DIY Videos You Might Like

More from The VSO Gun Channel

View all →