The Rarest Thompson In The World

The Rarest Thompson In The World: Only Prototype .30-06 Thompson Machine Gun Ever Made – Exclusive Hands-On Examination

Discover the holy grail of Thompson submachine gun history – the one and only prototype Thompson chambered in powerful .30-06 Springfield, a true unicorn firearm that exists as a single example on the planet. Brandon Herrera gets exclusive access at Rock Island Auction to handle and break down this mysterious experimental Tommy Gun, a heavily modified WWII-era design attempting to scale the iconic .45 ACP submachine gun up to full-power rifle cartridge performance.

• Unique delayed blowback system with innovative collet-style bolt and plunger friction lockup, echoing the controversial Blish Lock principles but adapted for extreme .30-06 pressures
• Modified BAR magazine integration with custom dremelled fit for reliable feeding in the classic Thompson lower receiver
• Beefed-up upper receiver, extended barrel, reinforced recoil assembly, and visible heat treatment for handling massive cartridge energy
• Open-bolt operation retained despite rifle caliber, raising fascinating questions about functionality and safety
• Experimental markings including "Experimental," CJ West Jr. engraving, and 1940s-era modifications on an unmodified original Thompson frame
• Technical deep dive with Zach Schaefer analyzing potential flaws: light bolt mass, narrow ejection port, oil pad lubrication, and doubts about safe operation
• Brief look at a companion .30 Carbine Thompson prototype for comparison, highlighting more feasible intermediate caliber experiments

This enigmatic prototype blends gangster-era legend with post-WWII engineering ambition, featuring crude yet ingenious modifications that make it a dream (or nightmare) for firearms historians. From its urban legend status with scarce photos to real-world handling, see why this .30-06 Thompson represents the pinnacle of rare machine guns – too historically significant to fire but irresistible for collectors and enthusiasts.

Essential viewing for Thompson collectors, full-auto fans, military firearms historians, NFA enthusiasts, and anyone obsessed with experimental weapons and forgotten prototypes.

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