How To Cut & Crown Your Arsenal AK-74 SLR-104UR Barrel At Home (HD)

Published on February 14, 2015
Duration: 11:31

This guide details a DIY method for cutting and crowning an Arsenal SLR-104UR barrel using common tools. The process involves careful cutting with a Dremel, squaring the barrel face with a grinder and file, polishing, and then creating a crown using valve grinding compound and a screw. The video demonstrates the technique with an experienced instructor's insights, emphasizing potential pitfalls and offering practical solutions for home gunsmiths.

Quick Summary

This guide details a DIY method for cutting and crowning an Arsenal SLR-104UR barrel using common tools like a Dremel and valve grinding compound. The process involves careful cutting, squaring the barrel face, polishing, and creating a crown with a screw and abrasive compound. Testing confirmed no keyholing with 7.62x39mm ammunition, demonstrating the effectiveness of this home gunsmithing technique.

Chapters

  1. 00:22Introduction and Setup
  2. 00:57Cutting the Barrel
  3. 02:09Initial Cut Results and Squaring
  4. 03:01Finishing and Polishing
  5. 04:34Crowning the Barrel
  6. 05:20Crowning Process Details
  7. 06:14Crowning Technique and Circular Motion
  8. 06:58Crown Completion and Testing
  9. 07:32Cleaning After Modification
  10. 08:07Range Testing Setup
  11. 08:50Range Testing Execution
  12. 09:38Range Test Results
  13. 10:21Conclusion and Call to Action

Frequently Asked Questions

What tools are needed for a DIY barrel cut and crown on an AK-74?

For a DIY barrel cut and crown on an AK-74, you'll need a Dremel tool with cutting and grinding attachments, a hand file, Mother's polish with a polishing wheel, valve grinding compound, a wood or brass screw slightly larger than the bore, and a drill. Thorough cleaning supplies are also essential.

What are the risks of a DIY barrel cut and crown?

Risks include inaccurate cuts leading to poor accuracy, bullet tumbling, and keyholing. Improper crowning can also affect projectile stability. Damaging the barrel threads or creating an uneven muzzle face are other potential mistakes. Careful execution is vital.

How do you properly crown a firearm barrel at home?

To crown a barrel at home, apply valve grinding compound liberally to a screw slightly larger than the bore. Insert the screw into the muzzle and use a drill with a circular motion for several minutes. This process grinds a precise angle at the muzzle, crucial for accuracy.

What ammunition was used to test the modified AK-74 barrel?

The modified Arsenal SLR-104UR barrel was tested using 7.62x39mm ammunition, specifically mentioning Red Army Standard. The testing focused on observing bullet impact and checking for keyholing or tumbling at various distances.

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