Zastava's M90: The Serbian M70 Updated to 5.56mm

Published on September 3, 2021
Duration: 13:36

This guide details the process of swapping furniture on the Zastava M90, moving from tactical accessories to traditional wood furniture. It also covers initial inspection points and familiarization with key features like the adjustable gas block and bolt-hold-open safety. The information is presented with the authority of Ian McCollum, a recognized expert in firearm history and mechanics.

Quick Summary

The Zastava M90 is an updated Serbian AK variant chambered in 5.56x45mm NATO. It features a durable 1.5mm RPK-style receiver, an 18.1-inch barrel, and a 3-position adjustable gas block for tuning performance. Reliable function requires specific Zastava/Yugo pattern 5.56 magazines.

Chapters

  1. 00:00Introduction & Furniture
  2. 01:14Zastava History & 5.56 AKs
  3. 03:12Receiver Markings & Stock Attachment
  4. 04:26Dust Cover & RPK Receiver
  5. 06:14Adjustable Gas Block
  6. 07:04Barrel & Muzzle Specs
  7. 08:19Safety & Optics Rail
  8. 09:36Magazine Compatibility
  9. 10:20Range Testing & Performance

Frequently Asked Questions

What caliber is the Zastava M90 rifle?

The Zastava M90 rifle is chambered in 5.56x45mm NATO. This caliber was adopted by Zastava for export market AKs starting in the 1970s, though not by the Yugoslavian military at that time.

What is unique about the Zastava M90's receiver construction?

The Zastava M90 features a heavy-duty 1.5mm stamped RPK-style receiver. This construction, along with a bulged front trunnion, provides increased durability and robustness compared to standard AKM receivers.

Does the Zastava M90 have an adjustable gas system?

Yes, the Zastava M90 is equipped with a three-position adjustable gas block. This feature allows users to tune the rifle's gas system for different ammunition types or for use with suppressors.

What type of magazines are recommended for the Zastava M90?

It is crucial to use Zastava/Yugo pattern 5.56 magazines for reliable function. Standard AKM 5.56 magazines are not universally interchangeable and can lead to feeding issues.

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