FACTOID # 163: Only 4% of married women in Chad are using contraceptives.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Pancor Jackhammer
Image of the Pancor Jackhammer
Image of the Pancor Jackhammer
Alternative view
Alternative view

The Pancor Corporation Jackhammer is a combat shotgun. It is a 12 gauge, gas-operated automatic weapon. It is one of very few fully automatic shotguns, and although patented in 1987, it never entered full scale production. Only a few working prototypes of the Jackhammer were ever built. Some sources state that only two fully automatic prototypes exist. In the late 1990s, the current owner of the design, Mark III, attempted to sell the patents, prototypes, and production rights for $350,000 (US). Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... jackhammer gun image This work is copyrighted. ... jackhammer gun image This work is copyrighted. ... The original trench shotgun, a Winchester Model 1897 Pump Shotgun, modified for use in World War I. Combat shotguns, shotguns modified slightly to increase their suitability for use in combat, have been popular in the United States, both with law enforcement and with the US military (particularly the US Marine... 12 gauge is the most common size of shotgun shell. ... The gas-operated system for implementing automatic reloading of a firearm is one of five such systems, the others being recoil-operated, gatling, chain, and blowback. ... M2 machine gun An automatic firearm is a firearm that will continue to load and fire rounds of ammunition as long as the trigger (or equivalent) is activated or until it runs out of ammunition. ... This article is very long Some browsers may have difficulty rendering this article. ...

Contents

General Statistics

  • Type: gas-operated, select-fire
  • Gauge: 12
  • Length: 787 mm
  • Barrel length: 525 mm.
  • Weight unloaded: 4.57 kg
  • Capacity: 10 rounds in removable revolver-type drum magazine
  • Rate of fire: 240 rounds per minute (four rounds per second)

Technical Definitions

The weapon, excluding the barrel, is constructed largely of a rynite plastic in order to reduce weight. It features a bullpup layout to preserve a 525 mm barrel length in an overall 787 mm package. The gun is fed by a 10 round capacity center-rotating drum using conventional 12 Gauge cartridges. The gun weighs 4.57 kg and has a maximum rate of fire of 240 rpm. The drum's method of rotation is very similar to the Webley-Fosbery semi-automatic revolver. The barrel of a firearm is the tube, usually metal, through which a controlled explosion is released in order to propel a projectile out of the end at great speed. ... Polyethylene terephthalate (aka. ... In the physical sciences, weight is a measurement of the gravitational force acting on an object. ... Steyr AUG is one of the most successful bullpup rifles Bullpup is a firearm configuration in which the action (or mechanism) and magazine are located behind the trigger. ... Unsolved problems in physics: What causes anything to have mass? The U.S. National Prototype Kilogram, which currently serves as the primary standard for measuring mass in the U.S. Mass is the property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... The Rate of fire is the speed at which a specific firearm or artillery piece can operate. ... Walther P99, a semiautomatic pistol from the late 1990s A semi-automatic firearm is a gun that requires only a trigger pull for each round that is fired, unlike a single-action revolver, a pump-action firearm, a bolt-action firearm, or a lever-action firearm, which require the shooter... rEVOLVEr (2004) is the fourth studio album release by Swedish thrash metal band The Haunted. ...


The floating barrel is driven forward by gas pressure from the fired round. It is returned by a spring and moves the drum operating rod, breaking the tight seal between the barrel and the drum and allowing the drum to revolve to offer the next round. On the return stroke the barrel and drum are re-sealed allowing the round to be fired without loss of gas. Spent cartridges are not ejected, remaining in the magazine. Approximately, the partial pressure of a gas in atmospheres in a mixture or solution is what would be the pressure of that gas if all other components of the mixture or solution suddenly vanished without its temperature changing. ... Helical or coil springs designed for tension A spring is a flexible elastic object used to store mechanical energy. ...


As an interesting additional feature, it is possible to take the drum magazine off the gun, attach a detonator and use it as an anti-personnel mine that fires all of the cartridges at once when tripped. Italian Valmara 69 bounding type of Anti-personnel. ...


Legality

Technically being a military weapon the Pancor Jackhammer along with most other automatic shotguns are considered a destructive device by the United States and is illegal for civilian use.


See also

The original trench shotgun, a Winchester Model 1897 Pump Shotgun, modified for use in World War I. Combat shotguns, shotguns modified slightly to increase their suitability for use in combat, have been popular in the United States, both with law enforcement and with the US military (particularly the US Marine... This is a list of shotguns. ... The SPAS-15 is a dual-mode 12 ga. ... The Saiga-12 is a Kalashnikov-pattern 12 gauge combat shotgun available in a wide range of configurations. ... The NS2000 is a type of shotgun developed for the South African company NeoStead by Tony Neophytou. ... The Atchisson Assault Shotgun is a firearm first developed in 1972 by Maxwell Atchisson. ... The DAO-12 (Also known as Striker, Protecta and Street Sweeper) is a revolver 12-gauge shotgun created for the purpose of riot control and combat. ...

External links

Wikimedia Commons has media related to:
Pancor Jackhammer
  • Modern Firearms - Jackhammer
  • Nazarian`s Gun`s Recognition Guide - Jackhammer Mk3A1

  Results from FactBites:
 
Modern Firearms - Jackhammer shotgun (915 words)
The Jackhammer automatic shotgun was developed by the US firearms designer John Andersen, who requested patents for the basic design of this shotgun in 1984.
At my opinion, the Jackhammer is a solution that still to have a question, and it possess some questionable features that can distract any serious military or police buyer.
The gas piston is formed by the collar, fixed to the barrel just ahead of the gas port that feeds the gases from the barrel into the gas cylinder.
Jackhammer - Definition, explanation (389 words)
A jackhammer (known as a pneumatic drill outside the United States and Canada) is a portable percussive-drill, operated by compressed air and used to drill rock, break up pavement, etc. It works in the manner of a hammer and chisel, by jabbing with its bit, not by rotating it.
The portable pneumatic jackhammer is impractical for use on walls and steep slopes as it relies on the inertia of the mass of its body to impel the bit into the work and manipulating that mass when it is not supported by the work is highly difficult.
A hydraulic jackhammer (on a much larger scale than the portable ones) may be fitted to mechanical excavators and is widely used on roadwork, quarrying and general demolition or constructional groundwork.
  More results at FactBites »


 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments
Please enter the 5-letter protection code

Want to know more?
Search encyclopedia, statistics and forums:

 


Lesson Plans | Student Area | Student FAQ | Reviews | Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms.