FN 509 BACK From the DEAD // How is this Possible??

Published on September 29, 2019
Duration: 17:47

This guide details how to identify and address firing pin failures in the FN 509 platform, a common issue highlighted by the Tactical Toolbox channel. It covers analyzing primer strikes to detect potential problems and installing an Apex Tactical Heavy Duty Firing Pin as a solution, which also improves trigger feel. The video also touches on compensator comparisons for the FN 509.

Quick Summary

Diagnose FN 509 firing pin issues by examining primer strikes for 'drag' marks, indicating potential failure. The Apex Tactical Heavy Duty Firing Pin is a recommended upgrade that eliminates this issue and improves trigger feel, addressing a common reliability concern.

Chapters

  1. 00:00FN 509 Firing Pin Failure Discussed
  2. 01:44FN 509 Compensator Comparison
  3. 04:45Apex Tactical Firing Pin Upgrade
  4. 06:00Identifying Potential Failure via Primer Strikes
  5. 07:34Trigger Pull Improvements with Apex Pin
  6. 11:08Compensator Reliability Issues
  7. 13:37Compensator Performance Testing

Frequently Asked Questions

What causes primer drag on an FN 509?

Primer drag on an FN 509 is typically caused by a worn or improperly designed firing pin that scrapes across the primer during the firing cycle, leaving a visible mark and potentially indicating a need for replacement or upgrade. The Apex Tactical Heavy Duty Firing Pin is designed to prevent this.

How can I tell if my FN 509 firing pin is failing?

You can often identify potential firing pin failure by examining the primer strikes on your spent casings. A healthy firing pin will leave a clean, circular indentation. If you see 'drag' marks or smearing, it suggests the firing pin may be worn or have a design flaw.

Does the Apex Tactical Heavy Duty Firing Pin improve the FN 509 trigger?

Yes, users report that the Apex Tactical Heavy Duty Firing Pin significantly improves the trigger pull and reset feel on the FN 509. It helps eliminate a 'catching' sensation, providing a smoother operation even with an aftermarket trigger installed.

Which FN 509 compensator performed better in testing?

In the tested scenarios, the Henry Holsters compensator (Version 2) demonstrated more reliable cycling with standard 115gr range ammunition and the OEM guide rod compared to the WAR compensator, which experienced cycling issues.

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