The Korsac EM1 - a British/Polish Bullpup FG-42

Published on June 26, 2017
Duration: 16:36

This guide details the field stripping procedure for the rare Korsac EM1 bullpup rifle, a modified FG-42. Expert Ian McCollum demonstrates the disassembly process, highlighting the unique bullpup trigger linkage and the two-piece receiver construction. The video provides a deep dive into the internal mechanics, making it valuable for advanced gunsmiths and historical firearms enthusiasts.

Quick Summary

The Korsac EM1 is a unique post-WWII British light machine gun, essentially a bullpup conversion of the German FG-42, designed by Korsac. Chambered in 8mm Mauser, it uses modified ZB-26 magazines holding 18 rounds. Its design features a two-piece welded receiver and a Bren-style quick-change barrel, though it faced semi-auto reliability issues due to its bullpup trigger linkage.

Chapters

  1. 00:00Introduction to the Korsac EM1
  2. 01:26Historical Context and Development
  3. 02:27Technical Specifications and Features
  4. 03:09Control Comparison with FG-42
  5. 04:28Field Stripping and Internal Components
  6. 06:16Barrel and Receiver Design
  7. 07:45Mechanical Comparison: Korsac vs. FG-42
  8. 10:33Bullpup Trigger Linkage
  9. 12:50Gas System and Muzzle Attachments

Frequently Asked Questions

What is the Korsac EM1?

The Korsac EM1, also known as the EM-1, is a rare post-WWII British light machine gun that is essentially a bullpup conversion of the German FG-42. It was designed by a Polish emigre named Korsac and developed between 1945 and 1947.

What caliber does the Korsac EM1 fire and what is its magazine capacity?

The Korsac EM1 is chambered in 8mm Mauser (7.92x57mm) and uses ZB-26 style magazines modified to hold 18 rounds. It features a long barrel due to its bullpup configuration.

How does the Korsac EM1's trigger mechanism work in its bullpup configuration?

To adapt the FG-42 action to a bullpup, Korsac employed a sliding block mechanism to transmit the trigger pull to the sears located further back. This system presented reliability challenges in semi-automatic fire.

What are the key design features of the Korsac EM1's barrel and receiver?

The Korsac EM1 features a Bren-style quick-change barrel system with interrupted threads. Its receiver is a complex two-piece welded construction, allowing for easier manufacturing through through-drilling.

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