How to Function Test an AR-15 Presented by Larry Potterfield of MidwayUSA

Published on July 19, 2018
Duration: 1:11

This video demonstrates a critical function test for the AR-15 platform, focusing on safety and operational checks. Key steps include verifying the safety selector's functionality, ensuring the hammer releases correctly in 'Fire' mode, and confirming the disconnector resets the hammer properly. Performing these checks ensures the rifle is safe and reliable before use.

Quick Summary

Perform an AR-15 function test by first ensuring the rifle is unloaded. Check the safety selector: it should block the hammer in 'Safe' and allow it to fall in 'Fire'. Test the disconnector by holding the trigger, recocking, slowly releasing the trigger to reset, then pulling again to confirm hammer fall.

Chapters

  1. 00:00Introduction & Safety Check
  2. 00:14Safety Selector Test
  3. 00:39Disconnector & Sear Function Test
  4. 01:00Conclusion & Final Checks

Frequently Asked Questions

What is the first step in an AR-15 function test?

The first step is to ensure the firearm is unloaded. Pull the charging handle fully to the rear, visually and physically inspect the chamber to confirm it is empty, and then release the charging handle.

How do you test the AR-15's safety selector?

Place the safety selector on 'Safe' and pull the trigger; the hammer should not fall. Then, move the selector to 'Fire' and pull the trigger; the hammer should fall.

What is the disconnector test for an AR-15?

With the trigger held fully to the rear, recock the hammer using the charging handle. Slowly release the trigger until you hear a click, indicating the disconnector has reset the hammer to the sear. Then, pull the trigger again to confirm the hammer falls.

Why is it important to perform multiple function tests?

Repeating the function test several times ensures that all components are working correctly and consistently. This thoroughness is crucial for confirming the firearm's reliability and safety before live firing.

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