Bommarito: America’s First Toggle-Locked Battle Rifle

Published on October 1, 2025
Duration: 13:29

This guide details the field stripping procedure for the rare Bommarito toggle-locked rifle prototype, as demonstrated by Ian McCollum. It covers the removal of the handguard and barrel, and provides an in-depth look at the unique toggle action, magazine system, and safety features. The analysis highlights the historical context of early semi-automatic rifle development and the specific challenges faced by this innovative design.

Quick Summary

The Bommarito Rifle is a rare prototype featuring a toggle-locked, short recoil action, chambered in .30-06, and utilizing a 20-round detachable magazine. Developed during early US military efforts to adopt semi-automatic rifles, it faced reliability issues like extraction problems and jam clearing difficulties, leading to its discontinuation.

Chapters

  1. 00:00Introduction to the Bommarito Rifle
  2. 00:35Historical Context: Semi-Automatic Rifle Initiative
  3. 02:27Action and Magazine Demonstration
  4. 03:16Short Recoil Operation Explained
  5. 05:05Field Strip Procedure
  6. 06:47Detailed Mechanical Analysis of Toggle
  7. 09:18Controls and Safety Features
  8. 10:36Sights: Front and Rear Integration
  9. 11:18Testing Issues and Project Abandonment

Frequently Asked Questions

What type of action does the Bommarito Rifle use?

The Bommarito Rifle employs a toggle-locked, short recoil action. This mechanism is similar in principle to that found in the Luger pistol, adapted for rifle use.

What caliber was the Bommarito Rifle prototype chambered in?

The Bommarito Rifle prototype was chambered in the .30-06 caliber. This was a standard military cartridge at the time, facilitating development using existing components.

What were the main challenges faced by the Bommarito Rifle project?

The Bommarito Rifle faced significant challenges, including extraction issues and difficulties in clearing jams. These reliability problems ultimately led to the project's abandonment.

What historical context surrounds the Bommarito Rifle's development?

The Bommarito Rifle emerged from a US military initiative in 1909 to replace bolt-action rifles with semi-automatics. Inventors were supported with resources like Springfield 1903 barrels.

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