SIG KE-9/M29A Prototype Rifles

Published on January 25, 2016
Duration: 11:54

This video provides an in-depth look at the rare SIG KE-9 and M29A prototype rifles, designed by Pal Kiraly. It details their short recoil operating system with a tilting bolt, fixed magazines, and the subtle but significant improvements made in the M29A to address operational jamming issues. The rarity and complexity of these firearms are highlighted, suggesting reasons for their limited production.

Quick Summary

The SIG KE-9 and M29A rifles employ a short recoil operating system with a tilting bolt. The M29A introduced a crucial improvement by ensuring the bolt maintained linear travel, preventing the tilting that could cause jamming in the KE-9, making it more reliable.

Chapters

  1. 00:05Introduction to SIG KE-9 and M29A Rifles
  2. 00:30Designer Pal Kiraly and His Work
  3. 00:56Rarity and Production Numbers
  4. 01:39Development of the M29A Variant
  5. 02:03Operating Mechanism: Semi-Automatic, Charger Fed
  6. 02:25Market and Potential Contracts
  7. 02:39Reference Material: A.O.A. Waffen
  8. 03:03Internal Mechanics: Short Recoil Explained
  9. 03:32Barrel Recoil and Action Clues
  10. 04:01Tilting Bolt Locking Mechanism
  11. 04:39Bolt Strength and Design Concerns
  12. 05:07Complexity and Manufacturing Cost
  13. 05:20Fixed Magazine and Caliber Options
  14. 06:01Bolt Travel and Locking Open
  15. 06:34Disassembly Procedure
  16. 07:05Bolt Machining Complexity
  17. 07:32Hammer-Fired Mechanism
  18. 07:47Firing Cycle Explained
  19. 08:21Potential Jamming Issue with KE-9
  20. 08:46M29A Improvements: Non-Tilting Bolt
  21. 08:50M29A Distinguishing Features
  22. 09:13M29A Action: Linear Travel
  23. 09:36Minor Detail Changes in M29A
  24. 10:02M29A Disassembly
  25. 10:16M29A Bolt Comparison
  26. 10:53Feature Comparison: KE-9 vs. M29A
  27. 11:13Experimental Rear Sight Brackets
  28. 11:32Conclusion and Thanks

Frequently Asked Questions

What is the operating mechanism of the SIG KE-9 and M29A rifles?

Both the SIG KE-9 and M29A rifles operate using a short recoil system. In this mechanism, the barrel assembly recoils a short distance, approximately a quarter inch, after firing. This recoil is used to unlock the bolt and cycle the action.

What were the main differences between the SIG KE-9 and the M29A?

The primary difference was in the bolt's operation. The M29A featured an improved bolt design that maintained linear travel, preventing it from tilting upwards and jamming during closure, a potential issue with the KE-9. The M29A also had minor ergonomic improvements like larger grasping tabs.

Who designed the SIG KE-9 and M29A rifles?

These rifles were designed by Pal Kiraly, a Hungarian-born designer who spent a significant portion of his career working for SIG. Kiraly was also known for designing other firearms, including the San Cristobal carbine and the SIG K7 light machine gun.

How rare are the SIG KE-9 and M29A rifles?

Both models are exceptionally rare. For the KE-9, the highest known serial number is seven, suggesting a very limited production run, possibly no more than ten. The M29A is even rarer, with likely only a handful ever made.

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