Schwarzlose M1907/12 Heavy Machine Gun

Published on March 2, 2015
Duration: 12:25

The Schwarzlose M1907/12 is a unique delayed blowback heavy machine gun that served as the standard for the Austro-Hungarian Empire in WWI. Its design, by Andreas Schwarzlose, bypassed existing patents and featured a water-cooled, fixed barrel system. Notable features include a closed-bolt firing mechanism, an internal oil pump for lubrication, and a distinctive sprocket-based belt feed requiring multiple charging handle cycles.

Quick Summary

The Schwarzlose M1907/12 is a unique heavy machine gun featuring a delayed blowback operating system designed to bypass existing patents. It is water-cooled with a fixed barrel and fires from a closed bolt. An internal oil pump ensures reliable extraction, and its distinctive sprocket-based feed requires three charging handle cycles to load.

Chapters

  1. 00:00Introduction & Firing Demo
  2. 00:19Historical Context: WWI Austro-Hungarian Standard
  3. 01:32Operating Mechanism: Delayed Blowback
  4. 02:03Water Cooling System Explained
  5. 02:43Barrel and Caliber Details
  6. 03:28Tripod and Adjustments
  7. 04:08Internal Components: Toggle-Link Mechanism
  8. 05:06Firing Cycle: Closed Bolt Operation
  9. 06:39Sighting System Features
  10. 07:36Unique Belt Feed Mechanism
  11. 09:30Triggers and Folding Spade Grips
  12. 10:36Internal Lubrication System
  13. 11:33Conclusion & Auction Note

Frequently Asked Questions

What makes the Schwarzlose M1907/12's operating mechanism unique?

The Schwarzlose M1907/12 utilizes a unique delayed blowback system designed by Andreas Schwarzlose. This mechanism allowed the bolt to be held rearward by mechanical means, delaying its opening until chamber pressure dropped to a safe level, and was developed to bypass existing patents on other operating systems.

How is the Schwarzlose M1907/12 cooled and what are its barrel specifications?

The Schwarzlose M1907/12 is water-cooled with a fixed barrel, which simplifies sealing the water jacket. It features a relatively short barrel, approximately 20 inches long, originally chambered in 8x50mmR, with many later updated to 8x56mmR.

What are some notable features of the Schwarzlose M1907/12's internal workings?

Internally, the Schwarzlose M1907/12 features a toggle-link delayed blowback mechanism and fires from a closed bolt, which is uncommon for heavy machine guns. It also incorporates an internal oil pump to lubricate cartridges before chambering, ensuring reliable extraction.

How is the Schwarzlose M1907/12 loaded and what are its trigger features?

The gun uses a unique sprocket-based belt feed system that requires the operator to cycle the charging handle three times to load a new belt. It is equipped with dual thumb triggers for firing and a central safety mechanism.

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