How Does it Work: Blow Forward

Published on May 28, 2019
Duration: 2:06

This entry details the blow forward firearm operating system, explaining its unique mechanism where the barrel moves forward during firing. It highlights historical examples like the Schwarzlose 1908 and Mannlicher 1894, discusses advantages such as increased safety, and notes the primary disadvantage of increased felt recoil. The information is presented with high authority by Ian McCollum, a recognized expert in historical firearm design.

Quick Summary

The blow forward system is a unique firearm operation where the barrel moves forward during firing, driven by gas pressure. This design offers increased safety by eliminating a rearward-moving slide but results in higher felt recoil. Historically, it was used in firearms like the Mannlicher 1894 and Schwarzlose 1908.

Chapters

  1. 00:00Introduction to Blow Forward Systems
  2. 00:09Physics of Operation
  3. 00:35Timing and Inertia
  4. 00:52Historical Commercial Examples
  5. 01:03Advantages of Blow Forward
  6. 01:22Disadvantages and Recoil

Frequently Asked Questions

What is a blow forward firearm system?

A blow forward system is an unusual firearm operation where the barrel moves forward during the firing cycle, rather than the slide or bolt moving backward. Gas pressure pushes the entire barrel mechanism forward to cycle the action.

What are the main advantages of the blow forward system?

Key advantages include increased shooter safety, as there is no slide to fly back at the shooter, and it allowed designers to bypass existing patents on blowback systems.

What are the disadvantages of the blow forward system?

A major downside is increased felt recoil. The forward movement of the barrel creates its own recoil force that adds to the recoil generated by the bullet's exit, according to Newton's third law.

Which firearms used the blow forward system?

Only three firearms were commercially produced using this system: the Mannlicher 1894, the Schwarzlose 1908, and the Hino-Komuro pistol.

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