How Belt Fed Machine Guns (and Links) Work (TFBTV Weekly 4)

Published on December 9, 2015
Duration: 9:31

This TFBTV episode delves into the intricate mechanics of belt-fed machine guns, explaining the differences between disintegrating and non-disintegrating links, and how cartridges are held and fed. It provides a detailed breakdown of the Browning M1919's operation, including its feed pawl and raceway system, and demonstrates the extraction and chambering cycle using snap caps. The discussion also contrasts older extraction-style links with more efficient modern push-through designs.

Quick Summary

Belt-fed machine guns use disintegrating or non-disintegrating links. Tension links hold rounds by neck tension, while push-through links allow direct chambering. The Browning M1919 features a feed pawl and raceway system for its cycling process.

Chapters

  1. 00:00Introduction to Belt-Fed Mechanics
  2. 00:53Types of Belt Links Explained
  3. 04:07Browning M1919 Internal Mechanics
  4. 05:08M1919 Feeding & Extraction Cycle Demo
  5. 07:45Modern vs. Older Link Designs

Frequently Asked Questions

What are the main types of belt links used in machine guns?

Machine guns primarily use disintegrating and non-disintegrating belt links. Disintegrating links break apart as cartridges are fed, while non-disintegrating links remain intact. Within these, tension links hold rounds by neck tension, and push-through links allow the cartridge to be directly pushed into the chamber.

How does the Browning M1919 machine gun feed ammunition?

The Browning M1919 uses a belt-fed system. Its internal mechanics include a top cover, a bolt with a raceway, and a feed pawl that advances the belt. During cycling, the extractor pulls a round from the link, which is then guided into the chamber by a cam track.

What is the difference between tension links and push-through links?

Tension links secure cartridges primarily through the neck tension of the round itself within the link. Push-through links are designed so that the bolt face or bolt carrier can directly push the cartridge out of the link and into the chamber, often considered more efficient.

Are modern belt link designs better than older ones?

Generally, modern Western push-through link designs are considered more efficient and easier to handle than older extraction-style links. They simplify the feeding process and reduce potential malfunctions associated with link manipulation.

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