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

Published on December 31, 2025
Duration: 1:23

This review of the Beretta M1918, presented by Ian McCollum of Forgotten Weapons, details its unique semi-automatic operation, open-bolt firing, and delayed blowback system. The carbine, an Italian WWI-era firearm, utilizes repurposed parts from the 1915 Villar Perosa and old Vetterli rifles, and fires 9mm Glisenti ammunition from a 25-round magazine. McCollum's deep knowledge of historical firearm evolution is evident throughout the technical explanation.

Quick Summary

The Beretta M1918 is an Italian WWI-era 9mm semi-automatic carbine featuring an open-bolt firing system and a delayed blowback mechanism. It uniquely incorporates repurposed parts from the 1915 Villar Perosa and Vetterli rifles, and utilizes a 25-round magazine.

Chapters

  1. 00:00Introduction to the Beretta M1918
  2. 00:11Parts Reuse and Open Bolt Operation
  3. 00:21Magazine Mechanism
  4. 00:35Caliber and Trigger Guard
  5. 00:47Mechanical Delay System

Frequently Asked Questions

What makes the Beretta M1918 unique among WWI firearms?

The Beretta M1918 is notable as Italy's WWI-era 9mm semi-automatic carbine. It features an open-bolt firing system and a delayed blowback mechanism, distinguishing it from many contemporary firearms and submachine guns.

How does the Beretta M1918's delayed blowback system work?

The M1918 employs a delayed blowback system using an angled surface on the bolt. This surface forces the bolt to rotate upward as it moves rearward, providing a slight mechanical delay that ensures safe operation with a lighter bolt.

What historical parts were incorporated into the Beretta M1918?

The Beretta M1918 demonstrates clever repurposing of existing firearm components. Its bolt handle and internal parts were reused from the earlier 1915 Villar Perosa, and it features a trigger guard taken from an old Vetterli rifle.

What caliber and magazine capacity does the Beretta M1918 have?

The Beretta M1918 carbine is chambered for the 9mm Glisenti cartridge. It is fed from a distinctive 25-round magazine, which utilizes a 'tail in rock forward' insertion method.

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