Project Lantan: Poland Designs a Modular AK in 7x41mm

Published on May 31, 2023
Duration: 15:26

Project Lantan was a rare 1970s Polish initiative to create a modular small arms system inspired by the Stoner 63, utilizing a universal receiver and a proprietary 7x41mm cartridge. Despite heavy AK mechanics, it featured a quick-change barrel and separable receivers. The project was cancelled due to Warsaw Pact standardization on the 5.45x39mm AK-74.

Quick Summary

Project Lantan was a 1970s Polish modular weapon system concept inspired by the Stoner 63, featuring a proprietary 7x41mm cartridge and AK mechanics. It aimed for interchangeable barrels and configurations but was cancelled due to Soviet standardization efforts favoring the 5.45x39mm AK-74.

Chapters

  1. 00:00Introduction to Project Lantan
  2. 00:41Modular Design Concept & Stoner 63 Influence
  3. 01:45Development and 7x41mm Cartridge
  4. 02:59Prototype Specifications (Lantan 01)
  5. 04:027x41mm vs. 7.62x39mm vs. 5.45x39mm
  6. 05:43AK Design Influence and Mechanics
  7. 06:24Unique Features: Separable Receivers & Barrel Change
  8. 07:26Disassembly Process Breakdown
  9. 09:50Barrel and Gas System Trunnion
  10. 13:58Project Cancellation and Standardization

Frequently Asked Questions

What was Project Lantan?

Project Lantan was a rare 1970s Polish initiative by Works 11 to create a modular small arms system. Inspired by the Stoner 63, it aimed for interchangeable barrels and feed systems, using a proprietary 7x41mm cartridge.

What cartridge did Project Lantan use?

Project Lantan developed a proprietary 7x41mm cartridge. This round was designed for better efficiency and a flatter trajectory than the standard Soviet 7.62x39mm, firing a heavier bullet at a comparable velocity.

How was Project Lantan influenced by the AK platform?

Despite its modularity, the Lantan heavily utilized AK mechanics, including the long-stroke gas piston system, rotating bolt, and standard AK components like the grip and magazine release, ensuring some familiarity for users.

Why was Project Lantan cancelled?

The Soviet Union cancelled Project Lantan to enforce Warsaw Pact standardization. They mandated the adoption of the 5.45x39mm cartridge and the AK-74 platform, leading Poland to develop the Tantal rifle instead.

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