Beretta M1918: Italy's Semiauto 9mm Carbine from WWI

Published on December 31, 2025
Duration: 16:28

This guide details the disassembly of the Beretta M1918 carbine, focusing on its delayed blowback action. It covers removing the receiver plug, recoil spring, and bolt assembly, highlighting the unique bolt rotation mechanism. The information is presented with expert insight from Ian McCollum of Forgotten Weapons.

Quick Summary

The Beretta M1918 is a unique Italian semiautomatic carbine from WWI, often confused with submachine guns. It employs a delayed blowback action, a 25-round top-mounted magazine, and an integrated folding bayonet. Chambered in 9mm Glisenti (loaded to 9mm Parabellum specs), it was designed by Tullio Marengoni for efficient production.

Chapters

  1. 00:00Introduction to Beretta M1918
  2. 00:40Origins: The Villar Perosa
  3. 02:25Beretta's Design and Tullio Marengoni
  4. 04:35External Features and Markings
  5. 07:13Bayonet and Offset Sights
  6. 08:57Disassembly and Mechanical Action
  7. 13:20Production and Service History

Frequently Asked Questions

What is the Beretta M1918 carbine?

The Beretta M1918 is a rare Italian semiautomatic carbine developed during World War I. It is often mistaken for a submachine gun but fires only in semi-automatic mode, featuring a unique delayed blowback action and a top-mounted magazine.

What caliber does the Beretta M1918 use?

The Beretta M1918 carbine is chambered in 9mm Glisenti, which is loaded to 9mm Parabellum specifications for this particular firearm. It utilizes a 25-round top-mounted box magazine.

What is the operating mechanism of the Beretta M1918?

The Beretta M1918 operates via a delayed blowback system. This mechanism involves the bolt rotating against an angled surface before moving rearward, allowing for a lighter bolt assembly while ensuring safe operation.

What historical context surrounds the Beretta M1918?

The M1918 evolved from the earlier Villar Perosa machine gun. Designed by Tullio Marengoni, it incorporated parts from other Italian firearms for economical production and saw limited service in WWI, with post-war variants and sales to other nations.

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