Uncommanded Striker Fire?

Published on July 31, 2025
Duration: 0:49

This guide details a method for testing striker-fired handguns for potential uncommanded firing events, as demonstrated by Polenar Tactical. It involves a specific setup using a zip tie on the trigger and a dowel in the barrel to observe if aggressive slide manipulation can cause the striker to release. The technique is presented as a safety concern investigation for models like the Sig Sauer P320 and AREX Delta Gen 2.

Quick Summary

Expert firearm instructor demonstrates a safety test for striker-fired handguns. By using a zip tie to partially engage the trigger and a wooden dowel in the barrel, aggressive slide manipulation is performed to check for uncommanded firing events, a concern noted for models like the Sig Sauer P320.

Chapters

  1. 00:00Intro to Unusual Setup
  2. 00:03P320 Video Reference
  3. 00:12AREX Delta Gen 2 Setup
  4. 00:26Testing with AREX Delta
  5. 00:36Uncommanded Fire Demonstrated

Frequently Asked Questions

How can I test my striker-fired handgun for uncommanded fire?

To test for uncommanded fire, ensure the firearm is unloaded. Place a zip tie on the trigger to simulate partial engagement, insert a dowel into the barrel, and then aggressively manipulate the slide. Observe if the dowel moves, indicating a firing event.

What is the 'wall' of a trigger pull?

The 'wall' in a trigger pull is the point of maximum resistance just before the trigger breaks and the firearm discharges. It signifies that the striker is fully cocked and requires minimal additional pressure to fire.

What firearms were discussed in the context of uncommanded striker fire?

The video specifically references potential uncommanded fire concerns with the Sig Sauer P320 and demonstrates a test on the AREX Delta Gen 2, using a setup to investigate this safety issue.

Why use a zip tie and wooden dowel for this test?

A zip tie restricts the trigger, simulating a partially engaged state. A wooden dowel inserted into the barrel provides a clear visual indicator of any forward movement caused by the striker releasing, confirming an unintended discharge.

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