Slow Motion Malfunctions of Exotic Firearms

Published on June 25, 2019
Duration: 8:41

This video provides an in-depth, slow-motion analysis of malfunctions in rare and exotic firearms, presented by Ian McCollum of Forgotten Weapons. The expert guide details issues like short cycling, case head separation, and feed failures, offering insights into design flaws and potential causes. It's a valuable resource for advanced firearm enthusiasts interested in the mechanical intricacies and reliability challenges of historical and custom weapons.

Quick Summary

Ian McCollum of Forgotten Weapons analyzes exotic firearm malfunctions in slow motion, detailing issues like short cycling, case head separation, and feed failures in rare models such as the ZK 420S, Type 99 Nambu, and Zip .22, offering expert insights into design flaws and reliability challenges.

Chapters

  1. 00:00Introduction & 1905 Mannlicher
  2. 00:27Type 99 Nambu Malfunction
  3. 00:45.276 Pedersen Clip Failure
  4. 01:06ZK 420S and ZH 29 Short Cycling
  5. 02:27BM 59 Gas Port Issues
  6. 03:29Type 100 SMG and Zip .22 Failures
  7. 04:39Beretta PG Burst Mechanism
  8. 05:33Bond Arms Bullpup 9 Ammo Issue
  9. 06:21Martz Luger Malfunctions

Frequently Asked Questions

What causes short cycling in firearms?

Short cycling in firearms can be caused by several factors, including a misadjusted or undersized gas port, insufficient gas pressure, or issues with the recoil spring. In the video, the BM 59 exhibited short cycling likely due to an undersized gas port, preventing the bolt from completing its rearward travel to chamber a new round.

What are common malfunctions seen in exotic firearms?

Common malfunctions observed in exotic firearms include short cycling (failure to pick up the next round), case head separation, failure to eject (stovepipes), and feed issues (failure to feed or cross-feed). These often stem from unique design challenges, ammunition compatibility, or wear and tear on rare mechanisms.

Why did the Zip .22 fail so frequently in the video?

The Zip .22 demonstrated multiple failures, including failure to eject and failure to feed. The presenter described it as 'firearms junk,' suggesting fundamental design flaws or poor manufacturing quality contributed to its extreme unreliability during testing.

What is 'bullet pull' and how does it affect firearm function?

Bullet pull occurs when the bullet separates from the cartridge case during the firearm's cycling action, often due to a lack of case taper crimp and rearward inertia. This results in gunpowder spilling into the action, as seen with the Bond Arms Bullpup 9, leading to malfunctions.

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