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22-604: Although often claimed to have appeared as a prop in movies and TV, the Internet Movie Firearms Database has not recorded a single example. This weapon is semi automatic and fully automatic. The Jackhammer was designed by John A. Anderson, who formed the company Pancor Industries in New Mexico . Anderson designed it based on his experiences using pump action shotguns in the Korean War and believed he could create

44-457: A better shotgun, finding reloading pump action shotguns awkward and time consuming. Reportedly, several foreign governments expressed interest in the design and even ordered initial production units once ready for delivery. However, export of the design was held up for production due to United States Department of Defense testing, though the design was eventually rejected. Testing was done by HP White Labs in destructive tests (destroying two of

66-460: Is not intended to be a part of the database is fictional firearms. For example, weapons that are beyond current technology such as laser (as the projectile), plasma, and/or nuclear particle (i.e. photon, etc.) devices are typically not accepted by the contributors of the site. Often this category of fictional weapons is associated with video games and anime , but some movies ( science fiction in particular) contain these as well. In these instances,

88-447: Is why he began uploading his videos to Full30 and Floatplane. In 2014, McCollum improved the quality of his videos by means of an IndieGogo campaign, the proceeds of which were used to purchase high-quality camera equipment. In 2018, McCollum co-founded Headstamp Publishing with colleagues N.R. Jenzen-Jones (of Armament Research Services ) and James Rupley, through which he wrote and published his book Chassepot to FAMAS . The book

110-685: The Outdoor Channel . Launched in May 2007 by "Bunni", The Internet Movie Firearm Database (IMFDb) was originally set up to help identify the use of firearms in Hollywood films . For the first few months of its existence, it listed only a dozen films including The Matrix , Platoon and Pulp Fiction . As the site grew, so did its content. In June 2007, the site began to list television shows as well as films. The site has since been expanded to include pages for video games and anime . As of September 2024,

132-609: The Webley–Fosbery Automatic Revolver , an operating rod being used to rotate the cylinder, although gas-operated as opposed to the recoil operation of the Webley-Fosbery. The Jackhammer is capable of semi-automatic and fully automatic fire by way of a thumb safety/selector switch. At the moment of firing, the front of the shell sealed inside the breech of the barrel much like the Nagant M1895 revolver. Unlike

154-476: The paratroop versions of the Empire of Japan 's Arisaka Type 99 rifle featuring a folding stock attached to a cabinet hinge. McCollum covers the history of such firearms in detail, and often explains how important certain firearms were to the development of weapon technologies and the history of warfare . He also usually explains the functioning and parts of the gun by dissassembling it. McCollum often borrows

176-514: The projectile is completely fictional. An example would be the blaster rifles from the Star Wars movies. These devices fire "bolts of energy" in the movies, and the firearm they are based on is the British-made Sterling sub-machine gun . Another example would be the 1999 movie Wild Wild West , in which a powered (as in, automatically revolving) Gatling gun is used, even though this

198-676: The Bear Trap was fully completed as of 1994. Internet Movie Firearms Database The Internet Movie Firearms Database ( IMFDb ) is an online database of firearms used or featured in films , television shows , video games , and anime . A wiki running the MediaWiki software, it is similar in function (although unaffiliated) to the Internet Movie Database for the entertainment industry. It includes articles relating to actors , and some characters , such as James Bond , listing

220-510: The Nagant, whose cylinder moved forward to form the seal, the barrel of the Jackhammer was driven forward and away from the cylinder by a ring-piston, using gas tapped from the bore. As the barrel moved forward, the breech cleared the front of the fired cartridge and an operating rod attached to the barrel rotated the cylinder through a "zig-zag" cam arrangement. As the next shell aligned with the bore,

242-461: The barrel returned under spring pressure back into the front end of the cylinder. Spent shells were retained in the cylinder, as in a traditional revolver. The Jackhammer has a charging handle in the forward grip to charge the weapon and a cocking lever in the buttstock to recock the firing mechanism in case of light strikes to the primer. For reloading, the cylinder was removed from the bottom of its housing and shells were manually extracted. Removing

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264-446: The classification in the US of the Jackhammer as a machine gun and restrictions on machine gun manufacture enacted in 1986. Additionally those foreign governments that did express interest were unwilling to finance development and final production. With no customers and little interest, Pancor went bankrupt. Supposed overseas orders were subject to United States Department of State approval that

286-455: The cylinder required the barrel be moved and secured in the forward position. Unique to the Jackhammer was the ability to convert a loaded cylinder from the weapon into an anti-personnel device similar to a land mine by the addition of a firing mechanism. The cylinder would be loaded with up to ten 12-gauge shells and the firing mechanism fitted over the bottom section of the cylinder. A pressure plate or plunger can then set to mechanically fire

308-513: The data base had grown to list over 7,260 films, over 2,422 television shows, over 920 video games and 578 Anime films and series. The site has been used as a reference source by the owners of several shooting ranges located in Las Vegas , Nevada. After hearing customers ask to rent certain types of firearms used in movies and video games, the owners of the range used IMFDb to research the weapons in question. One particular category of arms that

330-480: The devices that represent actual firearms or hypothetical future evolution of current firearms are represented. As the database primarily relates to small arms , categories of large destructive devices are excluded as well. One such example would be an Intercontinental Ballistic Missile ( ICBM ). No homemade films are permitted. Exceptions to the exclusions above are small arms that are fictional but constructed from real-life firearms (modified or original), even if

352-613: The firearms from auction houses, most commonly the Rock Island Auction and Morphy Auctions. He has also written books and articles for Popular Mechanics on the topic of firearms. He has also collaborated with other YouTubers and firearms experts such as C&Rsenal, Polenar Tactical and TFB TV. McCollum avoids political topics in favor of exclusively covering technical topics and history. He has amassed over 2 million subscribers on YouTube. Despite this, McCollum encountered some difficulties with YouTube deleting his videos , which

374-454: The particular firearms they have been associated with in their movies. Integrated into the website is an image hosting section similar to Wikimedia Commons that includes firearm photos, manufacturer logos, screenshots and related art. The site has been cited in magazines such as the NRA's American Rifleman and True West Magazine and magazine format television shows such as Shooting USA on

396-597: The shells in the cylinder upon pressing or initiate a spring-loaded timer which can be set to trigger firing up to twelve hours later, in one hour intervals. As the cylinder is designed to contain the pressure of firing normally, it can be discharged and reused when used in Bear Trap configuration. There is some disagreement over whether working models of the Bear Trap were built. According to Ian McCollum of Forgotten Weapons , no working prototypes were produced, however plastic model prototypes were produced and reportedly worked well. However, according to Jane's , development of

418-518: The three produced). Those sent to HP White Labs reportedly had 4 lb (1.8 kg) of material removed with increased stamping instead of casting and a different easier method of reloading. Thus the sole surviving example is not indicative of what would've been an actual production model and is better considered a tool room prototype. Several dozen non-functioning examples were made from sheet tin , balsa wood , and clay in order to make working tool prototypes. Civilian sales were made impossible by

440-404: Was legally registered as a machine gun and has also been seen auctioned. Though unconventional, the Jackhammer can best be described as a gas-operated revolver . Many parts were constructed of Rynite polymer to reduce weight. Layout was of a bullpup configuration with a 10-round revolving cylinder that fired conventional, 12-gauge shells. The cylinder's method of rotation was very similar to

462-447: Was not forthcoming. The assets of Pancor were sold off, including the few prototypes built. A toolroom prototype that is in technical firing condition, but is constructed largely with machine screws and requires disassembly to reload, was owned by Movie Gun Services, during which its forearm was replaced with an MP5SD handguard. This example has since been auctioned. Another prototype with more refined construction, though non-functional,

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484-500: Was not realized until 1946—Gatling guns in the era in which the film is set were exclusively operated by hand crank. Forgotten Weapons Forgotten Weapons is a website and channel appearing on YouTube , Utreon, Full30 and Floatplane , created and presented by Ian McCollum . Forgotten Weapons covers the history of antique , obscure, and historically important firearms . Forgotten Weapons frequently features unusual, rare, odd, experimental, or one-off firearms, such as

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