Test Firing an AK (With No Rivets??)

Published on February 4, 2020
Duration: 10:20

This guide details the experimental process of assembling an AK-pattern receiver using only dimples for trunnion retention, bypassing traditional rivets. It highlights the mechanics of dimpling and the subsequent live-fire test, which ultimately resulted in catastrophic failure, underscoring the critical role of rivets in structural integrity. The video features an expert firearm builder demonstrating advanced techniques and the consequences of deviating from proven methods.

Quick Summary

An expert firearm builder demonstrates the dangers of a rivetless AK build. Dimpling the receiver enhances the mechanical lock for rivets, but omitting rivets entirely leads to catastrophic failure as the trunnion walks out under recoil. This experiment highlights the critical importance of proper AK construction techniques for safety and reliability.

Chapters

  1. 00:00Introduction to Rivetless AK Experiment
  2. 00:44The Science of Dimpling
  3. 02:44Dimpling Process and Mechanical Lock
  4. 04:09Assembly and Live Fire Testing
  5. 07:08Catastrophic Failure and Analysis
  6. 08:47Conclusion and AK-50 Update

Frequently Asked Questions

What is the purpose of dimpling in AK receiver construction?

Dimpling in AK receiver construction involves using a hydraulic press to create indentations in the sheet metal receiver. These indentations press into the countersunk holes of the trunnion, increasing the surface contact area and creating a stronger mechanical lock that complements the rivets.

Why is it dangerous to build an AK without rivets?

Building an AK without rivets is extremely dangerous because rivets are essential for securing the trunnion to the receiver. Without them, the trunnion can 'walk' out under firing stress, leading to catastrophic failure, magazine ejection, and a complete loss of structural integrity.

What tools are needed for AK receiver dimpling?

The primary tools required for AK receiver dimpling are a hydraulic press and specialized dimpling dies. These dies are designed to create the correct shape and depth of dimple in the receiver sheet metal for proper trunnion fitment.

What happened during the rivetless AK test fire?

During the rivetless AK test fire, the rifle initially held together for a few shots. However, the front trunnion began to 'walk' forward out of the receiver, causing the magazine to fall out and the rifle to disassemble itself during firing, demonstrating the failure of the rivetless design.

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