• The Pancor Corporation Jackhammer is a 12-gauge, blow-forward gas-operated bullpup automatic shotgun designed in 1984 and patented in 1987.
  • The Pancor Corporation Jackhammer is a 12-gauge, blow-forward gas-operated bullpup automatic shotgun designed in 1984 and patented in 1987.
  • Pancor Jackhammer: The Real One.
  • The unconventional mechanism of Pancor Jackhammer can best be described as a gas-operated revolver.
  • Pancor Jackhammer Mk3-A2 mockup. ... Pancor Jackhammer toolroom prototype in original configuration - 12 gauge.
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  • The Pancor Jackhammer never existed as a production firearm. Only three prototypes were ever built, and two were destroyed in military testing.
  • The Pancor Jackhammer was developed by American gunsmith John Andersen as an automatic repeat-fire shotgun.
  • Pancor Jackhammer. ... A de-cocking lever inside the butt-stock allows the hammer to be safely lowered when the gun is loaded; it can be carried quite safely.
  • “The Pancor Jackhammer was a select-fire combat shotgun designed by John Andersen in the 1980s.