AR15 223 Suppressed Wet VS Suppressed Dry!!!

Published on April 19, 2024
Duration: 9:10

This video compares the sound suppression effectiveness of running a 7.62 AAC suppressor wet versus dry on two POF AR-15 platforms (16.5-inch and 10.5-inch barrels) chambered in .223/5.56. The test utilizes a sound meter to quantify the decibel levels. The presenter also contrasts piston-driven AR-15s with direct impingement systems.

Quick Summary

Testing an AAC 7.62 suppressor on POF AR-15s revealed that running it wet with water did not significantly reduce decibel levels compared to dry operation. The 16.5" barrel measured 88.5 dB dry and 89 dB wet, while the 10.5" barrel measured 89.3 dB dry. Unsuppressed, readings were much higher at 112-115 dB.

Chapters

  1. 00:00Introduction and Gear Overview
  2. 00:35AR-15 Piston vs. DI Explanation
  3. 01:5016.5" AR-15 Suppressed Dry Test
  4. 03:0310.5" AR-15 Suppressed Dry Test
  5. 04:2816.5" AR-15 Suppressed Wet Test
  6. 06:0610.5" AR-15 Suppressed Wet Test
  7. 06:47Transition to Unsuppressed Testing
  8. 07:0810.5" AR-15 Unsuppressed Test
  9. 08:1316.5" AR-15 Unsuppressed Test
  10. 08:45Test Results and Conclusion

Frequently Asked Questions

Does running an AR-15 suppressor wet make it quieter than dry?

In this specific test using a 7.62 AAC suppressor and plain water on .223/5.56 AR-15s, running the suppressor wet did not yield significantly lower decibel readings compared to running it dry. The sound meter showed minimal difference between the two methods.

What are the decibel readings for a suppressed AR-15?

When suppressed with an AAC 7.62 suppressor and XM193 ammo, the 16.5-inch POF AR-15 measured 88.5 dB dry and 89 dB wet. The 10.5-inch POF AR-15 measured 89.3 dB dry. Unsuppressed, these rifles registered 115 dB and 112.1 dB respectively.

What is the difference between piston-driven and direct impingement AR-15s?

Piston-driven AR-15s expel gas away from the receiver, typically through a rod system, leading to less gas in the shooter's face. Direct Impingement (DI) systems route gas directly back into the bolt carrier group, which can result in more gas exposure but generally makes the firearm lighter.

How much louder is an unsuppressed AR-15 compared to a suppressed one?

The difference is substantial. In this test, the unsuppressed AR-15s registered around 112-115 decibels, while the suppressed versions measured approximately 88-89 decibels. This indicates an increase of roughly 23-26 decibels when unsuppressed.

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