Project PRAK: Converting the CZ50 Pistol to 9x18mm Makarov

Published on October 31, 2025
Duration: 7:34

This guide details the experimental conversion of a CZ50 pistol to fire 9x18mm Makarov ammunition, as demonstrated in Project PRAK. The process involves adapting a VZ65 Skorpion barrel, modifying the slide's breech face, and fabricating a new magazine. This advanced gunsmithing procedure requires specialized tools and a thorough understanding of firearm mechanics.

Quick Summary

Project PRAK was an experimental 1966 Czech program to convert CZ50 pistols to 9x18mm Makarov. It involved adapting a VZ65 Skorpion barrel, modifying the slide, and fabricating a new magazine. However, the conversion suffered severe reliability issues, including extractor failures and magazine cracking, leading to its abandonment.

Chapters

  1. 00:00Introduction to Project PRAK
  2. 00:45Historical Context of CZ50 & 9x18mm
  3. 01:46External Prototype Features
  4. 02:40Magazine and Feed Modifications
  5. 03:00Internal Mechanical Changes
  6. 04:04Czech Prototype Naming Convention
  7. 04:49Testing, Failures, and Lifespan
  8. 05:46Conclusion and Legacy

Frequently Asked Questions

What was Project PRAK?

Project PRAK was an experimental program in 1966 in Prague, Czechoslovakia, aiming to convert existing CZ50 pistols from .32 ACP to the Soviet 9x18mm Makarov cartridge to modernize secondary sidearms economically.

What were the main technical challenges in converting the CZ50 to 9x18mm Makarov?

Key challenges included adapting a VZ65 Skorpion barrel, enlarging the slide's breech face for the larger cartridge, and fabricating a new magazine body, potentially using a Walther PP follower.

How reliable was the Project PRAK CZ50 conversion?

The conversion proved unreliable, with significant failures like extractor issues, slide peening, magazine cracking, and a broken firing pin, leading to an estimated service life of only 2,000 rounds.

What was the outcome of Project PRAK?

The project was abandoned by late 1966 due to the extensive reliability issues. The CZ50 remained in .32 ACP, and the Czech military later adopted the dedicated VZ82 for 9x18mm.

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