Is Your AK Working Properly? DyKem Test.

Published on February 25, 2018
Duration: 16:45

This guide details a method for testing AK-pattern rifle bolt and trunnion lug wear using DyKem layout fluid. By applying DyKem to critical locking surfaces and cycling the action, users can visualize wear patterns. This technique helps identify potential issues like uneven force distribution between primary and secondary locking lugs, which can indicate manufacturing or assembly problems. The process involves careful application, dry cycling, live-fire testing, and analysis of the resulting wear marks to assess the firearm's mechanical health.

Quick Summary

The DyKem test is a cost-effective method to assess AK bolt and trunnion lug wear. Apply DyKem to clean, dry locking surfaces, cycle the action, and analyze the transfer pattern. This helps identify uneven force distribution, particularly on the secondary locking lug, which can indicate manufacturing issues affecting reliability.

Chapters

  1. 00:00Introduction: Testing AKs
  2. 00:46How to Tell if Your AK is Working Properly
  3. 01:49Introducing DyKem Layout Fluid
  4. 02:24Key AK Components: Receiver, Trunnion, Bolt
  5. 03:54Headspace Degradation Scenarios
  6. 04:09Bolt and Trunnion Interaction
  7. 05:03Bolt Locking Mechanism Explained
  8. 05:36Primary vs. Secondary Locking Lugs
  9. 07:19Surfaces to Inspect for Wear
  10. 07:55Preparing for the DyKem Test
  11. 08:33Applying DyKem to Bolt Lugs
  12. 09:07Applying DyKem to Trunnion Surfaces
  13. 09:49Reinserting the Bolt for Testing
  14. 10:36Hand Cycling for Initial Transfer
  15. 11:32First Live Fire Test (5 Rounds)
  16. 12:43Analyzing Initial Wear Patterns
  17. 13:55Live Fire Test (20 Rounds)
  18. 15:02Analyzing Wear After Live Fire
  19. 15:30Tracking Wear Over Time
  20. 16:01Conclusion: Quick & Easy AK Test

Frequently Asked Questions

What is the DyKem test for AKs?

The DyKem test uses a specialized layout fluid to visualize wear patterns on an AK's bolt and trunnion locking lugs. By applying DyKem and cycling the action, you can see where contact is occurring, helping to identify uneven wear or potential manufacturing defects that could affect reliability.

How do I know if my AK's locking lugs are wearing properly?

Proper wear on AK locking lugs means force is distributed evenly, primarily on the larger primary locking lug. If the DyKem test shows excessive wear or force concentration on the secondary lug, it indicates an imbalance that needs investigation. Consistent contact on both lugs is ideal.

What tools are needed for an AK DyKem test?

You'll need DyKem layout fluid (blue or red), a cleaning rod, protective materials to prevent staining, gloves, the AK firearm itself, and ammunition for live-fire testing. Ensure all parts are clean and degreased before applying the DyKem.

Can I use lubricant during the DyKem test?

No, it's crucial to perform the DyKem test on clean, dry, and degreased surfaces. Lubricant will interfere with the DyKem's ability to transfer accurately, obscuring the true contact points and wear patterns. Apply lubricant only after the test is complete.

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