Pancor Jackhammer: The Real One

Published on September 12, 2015
Duration: 25:53

This entry details the rare Pancor Jackhammer prototype, a gas-operated, blow-forward 12 gauge shotgun designed by John Anderson. It covers its unique operating mechanism, including the drum magazine and gas seal system, its historical context in military trials, and its significant weight and rate of fire. The information is presented with high authority, drawing on detailed mechanical analysis and historical context.

Quick Summary

The Pancor Jackhammer is a rare, experimental 12 gauge shotgun known for its unique gas-operated blow-forward action and 10-round drum magazine. Only three functional prototypes exist, and this example underwent extensive testing, surviving 50,000 rounds, though the project ultimately failed due to funding issues.

Chapters

  1. 00:00Introduction and Cultural Significance
  2. 00:54Design History and John Anderson
  3. 01:36Military Trials and Project Failure
  4. 04:14External Controls and Features
  5. 06:16Operating Mechanism
  6. 10:22Blow-Forward Action
  7. 12:02Gas Seal System
  8. 13:51The 'Bear Trap' Landmine
  9. 15:29Internal Disassembly and Trigger Group
  10. 20:43Technical Specifications and Conclusion

Frequently Asked Questions

What is the Pancor Jackhammer and why is it significant?

The Pancor Jackhammer is an extremely rare, experimental 12 gauge shotgun, with only three functional prototypes ever produced. Its significance lies in its unique gas-operated blow-forward action, innovative drum magazine, and its status as a firearm famous from media but rarely seen in reality.

How does the Pancor Jackhammer's operating mechanism work?

The Jackhammer utilizes a gas-operated blow-forward system. Gas ports in the barrel direct pressure to drive the barrel forward against a recoil spring, cycling the action and rotating the 10-round drum magazine. It also features a unique gas seal system using the expanding shot shell.

What were the results of the Pancor Jackhammer's military trials?

The Pancor Jackhammer performed exceptionally well in tests at H.P. White Laboratory, reportedly surviving 50,000 rounds. However, the project did not proceed to adoption due to a lack of funding and the Department of Defense's hesitation regarding potential procurement.

What are the key technical specifications of the Pancor Jackhammer prototype?

The prototype Pancor Jackhammer is a 12 gauge gas-operated shotgun weighing 17.5 lbs, with a 10-round drum magazine and a cyclic rate of 240 RPM. It features safe, semi-auto, and full-auto fire modes.

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