Project Lantan: Poland Designs a Modular AK in 7x41mm

Published on May 31, 2023
Duration: 15:26

This guide details the disassembly of the Project Lantan 01 prototype, a modular rifle developed in Poland. It highlights the use of AK-style mechanics combined with unique features like a separable receiver and quick-change barrel system. The process involves removing a split pin to separate receivers and accessing the bolt carrier group, with a distinct trunnion mechanism for barrel retention. Instruction is provided by Ian McCollum, a recognized expert in historical firearms.

Quick Summary

Project Lantan was a 1970s Polish modular rifle concept using a proprietary 7x41mm cartridge for improved ballistics. Inspired by the Stoner 63, it featured a universal receiver and quick-change barrel system, but was ultimately cancelled due to Warsaw Pact standardization efforts favoring the AK-74.

Chapters

  1. 00:00Introduction to Project Lantan
  2. 00:41Modular Design Concept
  3. 01:45Development and Cartridge
  4. 02:59Prototype Specifications
  5. 04:027x41mm Cartridge Comparison
  6. 05:43AK Design Influence
  7. 06:24Unique Features and Controls
  8. 07:26Disassembly Process
  9. 09:50Barrel and Gas System
  10. 13:58Project Cancellation

Frequently Asked Questions

What was Project Lantan?

Project Lantan was a 1970s Polish initiative to create a modular small arms system, inspired by the Stoner 63. It aimed to use a universal receiver for various configurations like PDWs, rifles, and light machine guns with interchangeable barrels and feed systems.

What caliber did the Project Lantan use?

The Project Lantan utilized a proprietary 7x41mm cartridge, designed to offer better efficiency and a flatter trajectory than the standard Soviet 7.62x39mm round. This experimental round fired a 118-grain bullet at approximately 2,530 feet per second.

How was the Project Lantan disassembled?

Disassembly of the Lantan 01 prototype involved removing a front split pin to separate the upper and lower receivers. This granted access to the bolt carrier group, and a rotating lever on the heavy front trunnion allowed for quick barrel and gas tube removal.

Why was Project Lantan cancelled?

Project Lantan was cancelled due to Soviet pressure for Warsaw Pact standardization. The USSR mandated adherence to the 5.45x39mm cartridge and the AK-74 platform, effectively ending further development of independent Polish designs like Lantan.

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