How Full Auto AK’s REALLY Work

Published on August 27, 2020
Duration: 21:28

This video provides a detailed technical explanation of how full-auto AK-47s function, differentiating them from semi-automatic variants. Key components like the auto sear, modified receiver rails, and specific bolt carrier tabs are highlighted. The role of the selector lever and the safety sear in preventing out-of-battery detonations is also crucial.

Quick Summary

Full-auto AKs function using an auto sear, modified receiver rails with a specific slot, and a bolt carrier with a tripping tab. The auto sear releases the hammer, and also acts as a safety sear to prevent out-of-battery firings by ensuring the bolt is locked.

Chapters

  1. 00:43Introduction & Legal Disclaimer
  2. 03:20Semi-Auto AK Mechanics Recap
  3. 06:10The Auto Sear (The Third Pin)
  4. 07:38Receiver Rail Modifications
  5. 09:13Bolt Carrier Modifications
  6. 10:16The Selector Lever Function
  7. 11:43Safety Sear & Out-of-Battery Prevention

Frequently Asked Questions

What is the 'third pin' in a full-auto AK?

The 'third pin' commonly refers to the auto sear, a crucial component that enables full-auto fire. It works in conjunction with other modified parts like the receiver rails and bolt carrier to allow continuous firing.

How does the bolt carrier enable full-auto fire in an AK?

In a full-auto AK, the bolt carrier has a specific tab on its bottom right. As it moves forward into battery, this tab strikes the auto sear, tripping it and releasing the hammer for automatic fire.

What is the function of the auto sear beyond releasing the hammer?

The auto sear also acts as a safety sear. It ensures the hammer cannot fire the round until the bolt is fully rotated and locked into the trunnion, preventing dangerous out-of-battery detonations.

What modifications are needed on an AK receiver for full-auto conversion?

Full-auto AK receivers require a specific slot or channel on the right-side lower rail. This cutout allows the auto sear to rock back and forth, which is essential for the automatic firing cycle.

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