Witt Machine SME Slimline - Sound Testing with 9mm, .300 Blackout, and .308 Subsonic - Hearing Safe?

Published on August 9, 2020
Duration: 22:59

This video provides an expert-level review of the Witt Machine SME Slimline sound mitigation device. The host, demonstrating high authority, details its construction, performance with 9mm, .300 Blackout, and .308 subsonic rounds, and even performs a DIY modification. The SME Slimline is shown to be effective, particularly on longer barrels with rifle calibers, offering significant sound reduction and recoil management, though maintenance for seized components is noted.

Quick Summary

The Witt Machine SME Slimline is a two-piece sound mitigation device effective with subsonic rifle rounds (.300 BLK, .308) on longer barrels, reducing sound to an estimated 130-135 dB. It can be modified for 9mm but is less effective on short barrels. Maintenance is required to prevent seizing due to carbon buildup.

Chapters

  1. 00:00Introduction and Initial Sound Tests
  2. 02:05Product Overview: Witt Machine SME Slimline
  3. 03:09Construction and Customization
  4. 04:18Testing Methodology and Goals
  5. 06:32Recoil Reduction Analysis
  6. 07:58.308 Subsonic Sound Testing
  7. 11:28.300 Blackout Subsonic Sound Testing
  8. 14:529mm Subsonic Sound Testing
  9. 18:04Performance Summary and Maintenance
  10. 19:26Bystander Perspective and Conclusion

Frequently Asked Questions

How effective is the Witt Machine SME Slimline for sound mitigation?

The SME Slimline is effective, especially with subsonic rifle rounds like .300 Blackout and .308 Winchester on longer barrels. It significantly reduces sound at the shooter's ear, estimated around 130-135 dB for .308 subsonic, making it potentially hearing safe in open areas.

Can the Witt Machine SME Slimline be modified for different calibers?

Yes, the host demonstrates modifying a .30 caliber SME Slimline by drilling it out to .375 to safely accommodate 9mm projectiles for testing on platforms like the POF MP5K.

What are the potential drawbacks of the Witt Machine SME Slimline?

The two-piece design can seize due to carbon buildup, requiring maintenance. Its effectiveness is also reduced with 9mm on very short barrels, potentially causing ear ringing compared to rifle calibers.

What ammunition was used in the Witt Machine SME Slimline sound test?

The test utilized various subsonic rounds: Sellier & Bellot .308 Subsonic, Federal American Eagle .300 BLK, Magtech .300 BLK, and Blazer 9mm, across platforms like AR-10, Bushmaster ACR, and POF MP5K.

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