Full-auto Uzi SMG sand test!

Published on December 12, 2015
Duration: 7:21

This guide details a rigorous sand ingress test on an IMI Uzi SMG, demonstrating its performance under harsh conditions and outlining a field cleaning procedure. The test highlights the vulnerability of open-bolt designs to debris and provides practical steps for clearing malfunctions. Instruction is provided by a recognized firearms expert, emphasizing practical application and mechanical understanding.

Quick Summary

The IMI Uzi SMG's open-bolt design makes it susceptible to sand ingress through the exposed ejection port. Direct sand exposure can lead to malfunctions like failure to feed, especially if sand contaminates the magazine and binds the follower. Field cleaning involves disassembly, shaking out debris, and using blowing devices before reassembly and test firing.

Chapters

  1. 00:00Introduction to Uzi SMG
  2. 01:12Initial Sand Test (Bolt Closed)
  3. 02:20Drop Test and Sand Exposure
  4. 03:01Direct Sand Ingress and Malfunctions
  5. 04:16Field Stripping and Internal Inspection
  6. 05:33Final Testing and Conclusion

Frequently Asked Questions

How does sand affect an IMI Uzi SMG's operation?

Sand can significantly impact the IMI Uzi SMG's reliability. While external sand with the bolt closed showed initial function, direct ingress into the ejection port and magazine caused malfunctions like failure to feed due to sand binding the magazine follower and internal components.

What is the main vulnerability of an open-bolt firearm like the Uzi SMG in sandy conditions?

The primary vulnerability of an open-bolt firearm, such as the Uzi SMG, is the exposed ejection port. When the bolt is held to the rear, this port is open, allowing sand and debris to easily enter the receiver and potentially contaminate the bolt, spring, and chamber areas.

How can an IMI Uzi SMG be field-cleaned after sand exposure?

After sand exposure, an IMI Uzi SMG can be field-cleaned by disassembling it to access the bolt, receiver, and recoil spring. Loose sand can be removed by shaking the components and using blowing devices like compressed air or even lung power to clear debris before reassembly.

What type of malfunction occurred when sand entered the Uzi SMG's magazine?

When sand entered the magazine of the Uzi SMG, the primary malfunction observed was a failure to feed. The sand particles interfered with the upward movement of the magazine follower, preventing the cartridges from being presented correctly to the bolt.

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