Does the K-Spec BCG πŸ’© where it eats?

Published on May 11, 2024
Duration: 13:12

This video investigates whether the downward venting design of the K-Spec BCG increases fouling in the AR-15 lower receiver and magazines, particularly when used with a suppressor. The testing protocol involved comparing fouling levels after firing suppressed and unsuppressed with both the K-Spec BCG and a standard milspec BCG. The results suggest that while suppressors significantly increase fouling, the K-Spec's downward venting does not appear to contribute meaningfully to increased fouling in the magazine or fire control group compared to a standard BCG.

Quick Summary

The K-Spec downward venting BCG does not appear to significantly increase AR-15 fouling in the lower receiver or magazine, even when suppressed. Suppressors themselves are the primary cause of increased fouling due to higher gas expulsion from the barrel.

Chapters

  1. 00:00Intro: K-Spec BCG Fouling Concern
  2. 00:16Understanding the Fouling Concern
  3. 00:52Initial Assessment of K-Spec BCG
  4. 01:19Testing Protocol Overview
  5. 01:46Test Platform: Baby Dissipator
  6. 02:16Magazine and Ammunition Setup
  7. 03:28Unsuppressed Milspec BCG Test
  8. 04:32Suppressed Milspec BCG Test
  9. 05:21Suppressed K-Spec BCG Test
  10. 05:53Suppressed Flo 556k Test
  11. 06:23Comparing Fouling: Round 1
  12. 07:17Round 2: Extended Firing
  13. 08:07Unsuppressed Milspec BCG: Round 2
  14. 08:19Suppressed Milspec BCG: Round 2
  15. 09:11Suppressed K-Spec BCG: Round 2
  16. 09:36Suppressed Flo 556k: Round 2
  17. 10:13Final Fouling Comparison
  18. 11:12Conclusion: K-Spec BCG Fouling
  19. 12:00Additional Suppressed Firing
  20. 12:47Final Thoughts and Reassurance

Frequently Asked Questions

Does the K-Spec downward venting BCG increase fouling in an AR-15?

Based on testing, the K-Spec downward venting BCG does not appear to significantly increase fouling in the AR-15's lower receiver or magazine, even when used with a suppressor. The primary source of fouling is the increased gas expulsion from the barrel due to suppressor use.

What is the main cause of fouling when shooting an AR-15 suppressed?

When shooting an AR-15 suppressed, the main cause of increased fouling is the higher back pressure from the suppressor, which expels more gas and combustion byproducts from the chamber and barrel into the action.

How does the K-Spec BCG compare to a milspec BCG regarding fouling?

In suppressed firing tests, the K-Spec downward venting BCG showed fouling levels comparable to a standard milspec BCG. Neither design appeared to drastically worsen magazine or fire control group contamination beyond what suppression itself causes.

Are there any unique effects observed with the Flo 556k suppressor?

Yes, during testing, the Flo 556k suppressor caused the bullet tips of the fired ammunition to turn purple. This was an unusual observation not seen with the other tested configurations.

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