FNAB 43: From WW2 Italy to Algerian Independence

Published on November 2, 2025
Duration: 1:03

The FNAB-43 is a unique Italian submachine gun from late WWII, featuring a compact design with a folding magazine well and a delayed blowback action. It utilizes a closed-bolt system with separate selectors for safe/fire and semi/full-auto modes. While not widely adopted, its innovative mechanisms offer insight into firearm development during the era.

Quick Summary

The FNAB-43 is a late WWII Italian submachine gun featuring a compact design with a folding magazine well and a delayed blowback action. It operates with a closed bolt and has separate selectors for safe/fire and semi/full-auto modes, chambered in 9x19mm Parabellum.

Chapters

  1. 00:00Introduction to the FNAB-43
  2. 00:09Compact Design & Folding Magazine
  3. 00:22Bolt Operation & Selectors
  4. 00:35Firing Mechanism Details
  5. 00:46Delayed Blowback System Explained

Frequently Asked Questions

What is the FNAB-43?

The FNAB-43 is a late World War II Italian submachine gun known for its compact design, folding magazine well, and delayed blowback action. It was chambered in 9x19mm Parabellum and featured both semi-automatic and full-automatic fire modes.

How does the FNAB-43's delayed blowback system work?

The FNAB-43 utilizes a delayed blowback system with levers. When fired, recoil pushes the bolt back, engaging these levers which force the rear block of the bolt back slower than the front, reducing bolt speed before unlocking.

What are the key design features of the FNAB-43?

Key features include a compact profile, a folding magazine well secured by a spring detent, a closed-bolt operation, and separate selector levers for safe/fire and semi/full-auto modes.

What historical significance does the FNAB-43 have?

Developed in Italy during WWII, the FNAB-43 represents an interesting design from the period. It saw limited use post-war, including during the Algerian War of Independence, showcasing its transition from a wartime project to a Cold War era firearm.

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