TFBTV Mythbusting: Silenced SIG MPX

Published on June 27, 2016
Duration: 7:18

This guide details a method for testing gas blowback on a suppressed SIG MPX, as demonstrated by James Reeves of TFBTV. It involves a systematic approach using visual inspection and a unique 'science mask' test with napkins to quantify debris. The findings suggest that with specific configurations, such as using an AAC Triad adapter, significant blowback may be less of an issue than commonly claimed online.

Quick Summary

TFBTV's mythbusting test on the SIG MPX suppressed blowback found minimal gas expulsion during normal operation. Using an AAC Evo 9 suppressor and Triad adapter with 147gr CCI Blazer ammo, a 'science mask' test with napkins revealed virtually no debris, suggesting specific configurations mitigate common complaints.

Chapters

  1. 00:00Introduction to the SIG MPX Blowback Myth
  2. 01:30Initial Suppressed Shooting Test
  3. 03:18The 'Science Mask' Test
  4. 04:55Sideways Shooting and Conclusion
  5. 06:05Final Assessment and Suppressor Adapters

Frequently Asked Questions

Does the SIG MPX have significant gas blowback when suppressed?

According to TFBTV's testing with an AAC Evo 9 suppressor and Triad adapter, the SIG MPX exhibits minimal gas blowback during normal operation, contrary to some online claims. A 'science mask' test showed virtually no debris accumulation.

What ammunition was used to test the SIG MPX for blowback?

The SIG MPX was tested using 147-grain CCI Blazer 9mm ammunition. This heavier grain weight is often favored for suppressed shooting to potentially reduce gas port fouling and noise.

How did TFBTV test for suppressed blowback on the SIG MPX?

James Reeves used a visual inspection of the ejection port and a unique 'science mask' made of white napkins placed near the action. This allowed for clear observation of any gas, unburnt powder, or debris expelled during firing.

Could the suppressor adapter affect blowback on the SIG MPX?

Yes, the test suggested that the AAC Triad 3-lug adapter might act as an expansion chamber, potentially reducing the perceived gas blowback compared to other suppressor mounting methods. Further user feedback was invited.

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