Disassembling the Bizarre Terni Model 1921

Published on February 16, 2026
Duration: 1:07

This expert-level guide details the disassembly of the rare Terni Model 1921, presented by Ian McCollum of Forgotten Weapons. The process involves removing the buttstock and trigger guard, analyzing the trigger mechanism including the disconnector, and detaching the front end assembly with its unique monopod and bayonet mount. The video highlights the firearm's simple internal structure and points out a missing component for full-auto functionality.

Quick Summary

The Terni Model 1921 is disassembled by first removing the buttstock and trigger guard via two screws. The internal trigger mechanism, including the semi-auto disconnector, is then examined. Finally, the front end assembly, featuring a unique monopod and bayonet mount, is detached by removing a single screw.

Chapters

  1. 00:00Buttstock and Trigger Guard Removal
  2. 00:24Trigger Mechanism Analysis
  3. 00:42Front End and Monopod Disassembly

Frequently Asked Questions

How is the buttstock and trigger guard removed from the Terni Model 1921?

The buttstock and trigger guard of the Terni Model 1921 are removed by unscrewing two specific screws. These screws pass through spacer tubes internally, which help to hold the assembly in place.

What unique features are present on the front end of the Terni Model 1921?

The front end of the Terni Model 1921 is notable for its integrated monopod and bayonet assembly. This unit attaches via a nose cap and a distinctive muzzle support bracket, secured by a single screw.

What is significant about the trigger mechanism of the Terni Model 1921?

The Terni Model 1921's trigger mechanism features a semi-automatic disconnector. The design also includes a provision for a full-auto lever, which, if present and functional, would disable the disconnector for automatic fire.

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