The AK-50: One Mistake At A Time -Gun Life #26

Published on May 1, 2018
Duration: 11:54

This video details the process of modifying the AK-50's gas system to resolve brass deformation issues during extraction. The primary problem identified is excessive pressure at the point of extraction, caused by the gas port being too close to the chamber. The solution involves relocating the gas port further down the barrel, extending the gas tube and piston, and fabricating new components to achieve smoother cycling and extraction. The process includes welding the old gas port, installing a barrel extension, drilling a new port, and fitting extended gas system parts.

Quick Summary

The AK-50's brass deformation during extraction is caused by high chamber pressure when the gas port activates. To fix this, the gas port is moved further down the barrel, requiring a longer gas tube and piston. This modification allows pressure to dissipate before extraction, preventing casing damage and improving cycling reliability.

Chapters

  1. 00:00Introduction & Initial Thoughts
  2. 00:21First Gas Tube Test Fire
  3. 00:51Identifying Gas System Problem
  4. 01:53Barrel Profiling Challenges
  5. 02:37New Gas Piston Fabrication
  6. 03:22Piston Threading Success
  7. 03:52Lathe Work on Gas Piston
  8. 04:53Threading the Piston for Alignment
  9. 05:14Preparing for New Gas Port
  10. 05:33Brass Analysis & Extraction Issues
  11. 06:36New Gas Tube Construction
  12. 07:33Gunsmithing Philosophy
  13. 08:12Extending the Gas Piston
  14. 08:27Gas Tube as Alignment Tool
  15. 09:08Final Assembly & Bayonet Mount
  16. 09:54Test Fire Expectations
  17. 10:47First Test Fire with Extended Gas System
  18. 11:13Unexpected Malfunction & Analysis
  19. 11:23Next Steps: Tuning the Gas System

Frequently Asked Questions

What causes brass deformation in the AK-50's extraction process?

Brass deformation in the AK-50's extraction is caused by excessive residual pressure in the casing when the bolt carrier cycles. This is due to the gas port being too close to the chamber, meaning the gas system activates while chamber pressure is still very high, forcing the casing against the chamber walls.

How is the AK-50's gas system modified to improve extraction?

The AK-50's gas system is modified by moving the gas port further down the barrel. This involves welding the old port, installing a barrel extension, drilling a new port, and fitting a longer gas tube and piston to allow pressure to dissipate before extraction.

What is the purpose of threading the gas piston in the AK-50 modification?

Threading the gas piston into the bolt carrier on the AK-50 provides adjustability and helps with alignment. This is particularly useful for longer gas systems, allowing the piston to self-correct its path into the gas block, ensuring smoother operation.

Why is it important to extend the gas tube and piston on the AK-50?

Extending the gas tube and piston on the AK-50 is crucial for relocating the gas port further down the barrel. This adjustment reduces chamber pressure at the time of extraction, preventing brass deformation and improving the reliability of the cycling and ejection process.

More Gunsmithing & DIY Videos You Might Like

More from Brandon Herrera

View all →