Pancor Jackhammer

Automatic Shotgun

United States | 1987

"At least three working Pancor Jackhammer shotgun prototypes were known to exist yet the system failed to find any takers."

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Authored By: Staff Writer | Last Edited: 05/12/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The Pancor Jackhammer was developed by American gunsmith John Andersen as an automatic repeat-fire shotgun. The design was patented in 1987 with development work under the Pancor Industries brand label of New Mexico. The Jackhammer intended to combine the hard-hitting lethality of the 12-gauage shell with the repeat-fire nature of an automatic weapon, utilizing a revolver-style approach. The end product became a large - if cumbersome - futuristic-looking weapon that never found any takers on the world stage. Pancor Industries went into bankruptcy and all company assets - including the Jackhammer prototypes and plans - were sold off. The Jackhammer Mark 3 was the last known derivative of the Jackhammer design and it is estimated that no more than three were ever completed. For a time, the Jackhammer was being evaluated by the United States military which prevented its sale to foreign parties and, thusly, this added to the weapon's demise.

At its core, the Jackhammer was a conventional gas-operated system which allowed for full-automatic fire from a revolving 10-round ammo-cassette feeding 12-gauge (2.75") shells in through the rear of the receiver. The weapon sported conventional iron sites and two integral loops to serve as carrying handles across the top of the receiver. The barrel featured a distinctly angled muzzle cap with the angled pistol grip integrated into the underside of the weapon body. The Jackhammer weighed 4.57 kilograms with an overall length of 787mm and barrel length of 525mm. The firing action was semi-automatic or full-automatic through a selector switch. Rate-of-fire was listed at an impressive 240 rounds per minute. Due it its high rate-of-fire, the National Firearms Act of 1934 in the United States categorized the Jackhammer as a "machine gun" due to its high quantity repeat-fire capabilities, subsequently resulting in heavy regulation.

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Performance
Performance specifications presented assume optimal operating conditions for the Pancor Jackhammer. Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.

240
Rounds-Per-Minute
Rate-of-Fire

Physical
The physical qualities of the Pancor Jackhammer. Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.

787 mm
30.98 in
O/A Length

525 mm
20.67 in
Barrel Length

10.08 lb
4.57 kg
Weight

Gas-Operated; Full-Automatic
Action

12-Gauge
Caliber(s)

10-Round Cassette
Feed

Integrated (Carrying Handle).
Sights

Variants
Notable series variants as part of the Pancor Jackhammer Automatic Shotgun family line.

Jackhammer - Base Series Designation

Jackhammer Mark 1 - Presumed original prototype

Jackhammer Mark 2 - Presumed second prototype

Jackhammer Mark 3 - Presumed third prototype; last known version.

Operators
Global customers who have evaluated and/or operated the Pancor Jackhammer. Nations are displayed by flag, each linked to their respective national small arms listing.

Contractor(s): Pancor Corporation - USA

[ United States ]

1 / 1

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Going Further...
The Pancor Jackhammer Automatic Shotgun appears in the following collections:

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