Smyth Busters: Do You Really Need a Chamber Brush?

Published on August 23, 2022
Duration: 3:11

This guide, drawing from the expertise of Brownells representatives, details essential firearm chamber cleaning techniques. It emphasizes the importance of dedicated chamber brushes for AR-15 platforms to maintain bolt function and addresses carbon ring issues in revolvers. A specific tip is provided for .22 rimfire firearms, highlighting how a bore brush can suffice for chamber cleaning.

Quick Summary

Learn essential firearm chamber cleaning techniques from Brownells experts. For AR-15s, dual-diameter chamber brushes clean both the chamber and locking lug recesses for optimal function. Revolvers can suffer from carbon rings due to firing shorter cartridges, hindering chambering. For .22 rimfire, a bore brush suffices due to shared diameters.

Chapters

  1. 00:00Introduction to the Myth
  2. 00:21Neglect of Chamber Brushes
  3. 01:09AR-15 Specific Maintenance
  4. 01:57Revolver Chamber Issues
  5. 02:25.22 Rimfire Tip and Conclusion

Frequently Asked Questions

Why is a chamber brush important for an AR-15?

A chamber brush for an AR-15 is crucial because its dual-diameter bristles clean both the chamber and the critical locking lug recesses. This ensures smooth bolt rotation and reliable firearm operation, preventing potential malfunctions caused by fouling in these areas.

How does carbon buildup affect revolvers?

In revolvers, carbon buildup can form a 'carbon ring' when firing shorter cartridges (like .38 Special in a .357 Magnum). This ring can obstruct the chamber, preventing longer, full-length cartridges from being properly seated and chambered.

Can a bore brush clean a .22 rimfire chamber?

Yes, for .22 rimfire firearms, a standard bore brush is often sufficient to clean the chamber. This is because the bullet and the cartridge case share the same diameter, allowing the bore brush to effectively remove fouling.

What is the myth busted in the video?

The video busts the myth that chamber brushes are unnecessary for firearm maintenance. It highlights that while often overlooked or discarded, these brushes are vital for cleaning critical areas like AR-15 locking lugs and preventing issues like carbon rings in revolvers.

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