Girsan 1911 Chapter 3 - Did we fix it? MC1911S

Published on February 11, 2020
Duration: 13:29

This video details troubleshooting a Girsan MC1911S pistol experiencing jamming issues, primarily attributed to extractor tension. After tuning the extractor claw by slightly bending it, the firearm was tested with both Full Metal Jacket (FMJ) and hollow-point (HP) ammunition. While FMJs ran without issue, HP ammunition continued to cause malfunctions, particularly in the last round or when the firearm heated up and became slightly dirty. The Pro Mag magazine was also noted for not holding open.

Quick Summary

Troubleshooting a Girsan MC1911S revealed that extractor claw tension was the main cause of jamming. Tuning the extractor improved reliability with FMJ ammo, but hollow points still caused malfunctions, particularly when the firearm heated up or got dirty, suggesting a marginal feeding issue.

Chapters

  1. 00:00Introduction: Part 3 of MC1911S Troubleshooting
  2. 00:12Diagnosing the Issue: Extractor Claw Tuning
  3. 00:30Test Ammunition: FMJ vs. Hollow Points
  4. 01:51Front Sight Adjustment
  5. 03:3950 Rounds of FMJ Complete
  6. 04:05Testing Hollow Points: Original Magazine
  7. 04:50Hollow Point Malfunctions Observed
  8. 04:55Testing with Pro Mag Magazine
  9. 08:09Improved Performance with Hollow Points
  10. 09:04Last Round Malfunction with Pro Mag
  11. 09:58Issue Appears When Heated/Dirty
  12. 10:56Return to Full Metal Jacket Testing
  13. 12:48Conclusion: Hollow Points Still Problematic

Frequently Asked Questions

What was the primary cause of jamming in the Girsan MC1911S?

The primary cause of jamming in the Girsan MC1911S was identified as the extractor claw being too tight. Tuning the extractor by slightly bending it outwards was the attempted solution to resolve these feeding and extraction issues.

Did tuning the extractor fix all reliability issues with the Girsan MC1911S?

Tuning the extractor significantly improved reliability with Full Metal Jacket (FMJ) ammunition. However, hollow-point (HP) ammunition continued to cause malfunctions, especially when the firearm became hot or slightly dirty, indicating a persistent feeding issue with certain bullet types.

What types of ammunition were tested in the Girsan MC1911S?

The Girsan MC1911S was tested with both Full Metal Jacket (FMJ) ammunition, which it ran reliably, and various hollow-point (HP) ammunition types. The hollow points were the focus of the reliability testing due to previous jamming problems.

What role did the magazine play in the Girsan MC1911S's malfunctions?

The Pro Mag magazine used in testing did not hold the slide open after the last round, suggesting it was not the cause of the firearm's feeding issues. The malfunctions were more closely linked to the ammunition type and the firearm's operating condition (heat/fouling).

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