Zastava M90 First shots.

Published on September 4, 2021
Duration: 25:06

This guide details the process of tuning the adjustable gas system on the Zastava M90 rifle and testing magazine compatibility. It covers initial settings, adjustments for cycling issues, and performance evaluation with different magazine types, drawing on the expertise of KLAYCO47, a recognized authority in the AK platform community.

Quick Summary

The Zastava M90 rifle features a 1.5mm bulged trunnion, an 18-inch chrome-lined barrel, and a 3-position adjustable gas system for tuning performance. Polish Beryl magazines are highly recommended for reliable feeding, while Galil magazines showed mixed results. Customization options include JMac furniture and RS Regulate mounts with Trijicon optics.

Chapters

  1. 00:00Introduction and Channel Support
  2. 01:33Zastava M90 Background
  3. 03:46Customization and Upgrades
  4. 08:17Optics and Mounting
  5. 09:45Range Testing: First Shots
  6. 11:12Gas Tuning and Magazine Compatibility
  7. 16:51Dynamic Shooting and Final Thoughts

Frequently Asked Questions

What are the key features of the Zastava M90 rifle discussed in the video?

The Zastava M90 features a 1.5mm bulged trunnion receiver, an 18-inch chrome-lined, cold hammer-forged barrel with a 14x1 LH thread pitch, and a 3-position adjustable gas system. It is chambered in 5.56x45mm and uses standard AK-pattern magazines.

How does the Zastava M90's gas system tuning affect its performance?

Adjusting the 3-position gas system on the Zastava M90 allows for tuning of cycling speed and recoil. Starting on setting 2 provides low recoil, while switching to setting 3 (full gas) can resolve cycling issues and ensure reliable operation with various ammunition types.

Which magazines are recommended for the Zastava M90 based on the video?

The video highlights Polish Beryl magazines as performing flawlessly with the Zastava M90. While factory Zastava magazines also performed well, surplus Galil steel magazines showed mixed reliability, indicating the need for individual testing.

What customization options were shown for the Zastava M90?

KLAYCO47 demonstrated replacing the stock furniture with a US Palm grip and a JMac SS-8R stock mounted via a Picatinny adapter. A JMac Customs G36-style flash hider and an RS Regulate 307MS mount with a Trijicon MRO optic were also showcased.

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