Knife-Gun Monday: Sigaud-Barnerias 5mm Pinfire

Published on September 3, 2025
Duration: 1:04

This guide details the operation of the Sigaud-Barnerias 5mm Pinfire Knife-Gun, a historical novelty firearm. It covers extending the blade, deploying the offset trigger, loading the 6-round cylinder via a gate, and using the manual ejector rod. The video highlights the practical necessity of the blade being open for use and compares such historical curiosities to modern 'gimmick' firearms.

Quick Summary

The Sigaud-Barnerias Knife-Gun is a 5mm Pinfire revolver with a 6-round capacity. Its unique design includes a folding trigger offset to sit beside the knife blade when closed. Loading is done via a gate, and spent cases are ejected with a manual rod. Historically, it represents a consistent market for novelty firearms.

Chapters

  1. 00:00Introduction: Sigaud-Barnerias Knife-Gun
  2. 00:06Mechanism: 5mm Pinfire Revolver
  3. 00:18Trigger and Blade Design
  4. 00:30Operation: Loading and Ejection
  5. 00:49Historical Context & Novelty Firearms

Frequently Asked Questions

What is the caliber of the Sigaud-Barnerias Knife-Gun?

The Sigaud-Barnerias Knife-Gun is chambered in 5mm Pinfire. It utilizes a revolver mechanism with a cylinder designed to hold these specific pinfire cartridges.

How is the Sigaud-Barnerias Knife-Gun loaded and unloaded?

The 6-round cylinder is loaded via a loading gate. Spent cases are ejected using a manual ejector rod. The cylinder features specific notches for the pinfire cartridges.

What is unique about the trigger and blade design of the Sigaud-Barnerias Knife-Gun?

The trigger folds down and is intentionally offset to sit alongside the knife blade when the device is closed. While the blade doesn't have to be open to fire, it's practically necessary for use.

What historical context is provided for the Sigaud-Barnerias Knife-Gun?

Ian McCollum compares the Sigaud-Barnerias Knife-Gun to modern 'gimmick' firearms like the LifeCard, suggesting that the market for such novelty items has remained consistent throughout history.

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