Metal Storm

Metal Storm was an Australian defence-technology research and development company based in Brisbane. Its name referred both to the company and to the electronically controlled weapons technology developed around the inventions of Australian engineer J. Mike O'Dwyer. The company concentrated on a distinctive form of superposed-load ammunition, in which several projectiles were arranged nose-to-tail inside a single barrel, with propellant charges placed between them and fired selectively by electronic ignition. The underlying idea had historical precedents. Superposed loads had been explored in firearms as early as the sixteenth century, and the eighteenth-century Chambers gun used a related stacked-projectile principle. Earlier systems were generally impractical because of cost, complexity and the danger that hot propellant gases could pass the forward projectile and ignite charges farther down the barrel. O'Dwyer's work in the early 1990s sought to address this blow-by problem. His patented designs used the pressure generated during firing to seal the remaining projectiles against the barrel, while later versions used skirted projectiles and inductive electronic ignition. This arrangement was intended to provide selective, rapid firing without conventional cartridge cases or mechanically cycling actions. Metal Storm promoted the technology around several possible advantages: extremely high rates of fire, compact ammunition storage, reduced moving parts and the ability to select different projectiles from a preloaded barrel or tube. The company demonstrated a 36-barrel prototype in 1997 and publicized a test in which an array fired a short burst at a rate exceeding one million rounds per minute. Such figures reflected the simultaneous or near-simultaneous discharge of multiple barrels rather than the sustained performance of a conventional single-barrel firearm. The technology attracted attention from military organizations and defence observers, including interest in naval close-in defence, armoured-vehicle protection and specialized infantry weapons. The company developed several product concepts. The MAUL was an electronically fired 12-gauge under-barrel or stand-alone launcher intended to fire lethal and less-lethal ammunition from five-round stacked tubes. The 3GL was a semi-automatic grenade launcher capable of holding up to three individually loaded grenades. Metal Storm also publicized multi-barrel volley guns and a minigun concept using separately fired chambers. In April 2009, the company reported the first shoulder-fired MAUL test at its Chantilly, Virginia facilities. Metal Storm pursued both military and civilian applications. In 2003 it agreed to support Thunderstorm Firefighting Pty Ltd in exploring an application for bushfire suppression. It also received American military funding in 2003, and the United States Navy was reported in 2007 to have purchased Metal Storm grenade barrels. In 2010, the company entered a contract with Papua New Guinea Correctional Services for MAUL systems and less-lethal barrels. These arrangements demonstrated interest in the technology, but did not establish broad-scale production or sustained commercial deployment. The company’s development path was ultimately limited by the technical, manufacturing and market challenges associated with novel ammunition and electronically initiated weapons. O'Dwyer left the company in 2005 after receiving a reported payout and attempting to sell part of his stake. Metal Storm entered voluntary administration on 26 July 2012. In late 2015, Australian defence research company DefendTex acquired Metal Storm’s intellectual property, trademarks and other assets, with the stated aim of continuing development and commercialization. Metal Storm therefore survives primarily as a technology and intellectual-property legacy rather than as an operating weapons manufacturer.

Metal Storm developed from J. Mike O'Dwyer’s work on electronically controlled superposed-load ammunition. Superposed loading places several projectiles in sequence within one barrel, with propellant charges between them. Although related principles had appeared in earlier firearms experiments, historical systems were generally impractical because of expense, complexity and the risk of unintended ignition. O'Dwyer’s early-1990s patents addressed the blow-by problem by using projectile deformation and pressure to create a seal inside the barrel. Later designs used skirted projectiles, in which the projectile structure helped contain the propellant and the nose of the following projectile provided a rear seal. Electronic and inductive ignition allowed individual charges to be selected without relying on a conventional mechanical firing sequence. The company used the Metal Storm name for both the technology platform and the Brisbane-based research and development business commercializing it. Its public demonstrations emphasized compact storage and exceptional short-burst rates. A 36-barrel prototype was shown in 1997, and later demonstrations claimed rates above one million rounds per minute for a brief multi-barrel burst. These performance claims described dense projectile delivery from arrays of barrels and were not equivalent to sustained single-barrel fire. Metal Storm explored military applications including infantry launchers, grenade systems, naval defence and possible armoured-vehicle protection. It also investigated civilian uses. In 2003, it entered an arrangement with Thunderstorm Firefighting Pty Ltd to explore adapting the technology for bushfire response. The company received American military funding that year. International interest included a reported Chinese offer in 2000 and later United States Navy procurement of grenade barrels. In 2010, Metal Storm agreed to supply MAUL launchers and less-lethal barrels for Papua New Guinea correctional services. Its best-known proposed product was the MAUL, a 12-gauge electronically fired accessory or stand-alone launcher. It was designed around preloaded five-round munition tubes and was intended to support buckshot, slugs, breaching, frangible and less-lethal payloads. The company reported a shoulder-firing test in April 2009. The 3GL offered a different format: a semi-automatic grenade launcher capable of carrying up to three individually loaded grenades. Other concepts included a large multi-barrel volley gun and a chambered minigun. Despite technical publicity and military interest, Metal Storm did not become a large-scale conventional arms producer. O'Dwyer left in 2005, and the company later faced the commercial difficulties typical of bringing novel ammunition, electronics and weapons manufacturing into sustained production. Metal Storm entered voluntary administration on 26 July 2012. In late 2015, DefendTex acquired the company’s intellectual property, trademarks and other assets, preserving the technology in a successor ownership context. The original Metal Storm corporate operation is therefore defunct, while the associated patents, designs and brand history remain part of Australia’s defence-technology record.

1. 2015DefendTex asset acquisition

   DefendTex acquired Metal Storm’s intellectual property, trademarks and other assets.

   Source
2. 2012Voluntary administration

   Metal Storm entered voluntary administration on 26 July.

   Source
3. 2010Papua New Guinea supply contract

   Metal Storm signed a reported contract for MAUL launchers and less-lethal barrels for correctional-services use.

   Source
4. 2009Reported first shoulder-fired MAUL test

   The company reported shoulder firing its MAUL launcher at its Virginia test site.

   Source
5. 2007U.S. Navy grenade-barrel purchase

   Metal Storm announced a purchase of grenade barrels by the United States Navy.

   Source
6. 2005O'Dwyer departs

   Founder and inventor J. Mike O'Dwyer left Metal Storm after a reported payout.

   Source
7. 2003Firefighting application agreement

   Metal Storm agreed to support Thunderstorm Firefighting in exploring a civilian bushfire application.

   Source
8. 2003American military funding

   The company received funding from the American military for development related to its technology.

   Source
9. 2000Reported Chinese development offer

   The Chinese government reportedly offered funding for development in China; O'Dwyer rejected the proposal and notified Australia's Department of Defence.

   Source
10. 1997First 36-barrel prototype unveiled

    Metal Storm publicly presented a 36-barrel prototype demonstrating its stacked-projectile and electronic-firing approach.

    Source

Metal Storm positioned itself as an advanced defence-technology developer rather than a conventional firearms manufacturer. Its differentiation rested on electronically controlled ignition, stacked projectiles, very high burst rates, compact ammunition arrangements and the potential to fire lethal or less-lethal payloads from the same basic platform.

• MAUL12-gauge accessory and stand-alone launcher

  The Multi-shot Accessory Under-barrel Launcher was designed as an electronically fired 12-gauge system attachable to platforms such as the M4 or M16, while also being proposed in a stand-alone configuration. Its five-round stacked munition tubes were intended to support several payload families, including buckshot, slugs, door-breaching rounds, frangible ammunition and less-lethal blunt-impact rounds. Metal Storm reported a shoulder-firing test in 2009.

• 36-barrel stacked-projectile volley gunmulti-barrel defence weapon prototype1997

  This prototype array used 36 barrels loaded with stacked projectiles and electronically initiated propellant charges. Metal Storm publicized a short 180-round burst at a rate of just over one million rounds per minute. The system illustrated the brand’s emphasis on concentrated, extremely rapid projectile delivery from a fixed or array-based weapon rather than conventional sustained automatic fire.

• 3GLsemi-automatic grenade launcher

  The 3GL was a semi-automatic grenade launcher designed to hold and fire up to three individually loaded grenades. It could be attached through rail interfaces or configured with a folding stock for stand-alone operation. Unlike the stacked-tube MAUL concept, the 3GL used individually loaded grenade ammunition and was intended as a compact repeating launcher.

• Metal Storm minigun conceptelectronically fired multi-chamber gun

  Metal Storm also developed a minigun concept using a belt of separately firing chambers. It represented an alternative implementation of the company’s electronic ignition principle and was part of the broader portfolio of experimental weapon architectures associated with the Metal Storm technology.

• 2003Thunderstorm Firefighting technology collaboration

  Australia

  Metal Storm agreed to assist Thunderstorm Firefighting Pty Ltd in examining whether its technology could support civilian bushfire-fighting activities.

  Outcome. The available reference describes an exploratory agreement but does not establish a commercial firefighting product or deployment.

  Source

• 2015Transfer technology assets to DefendTexM&A

  After Metal Storm entered administration, its intellectual property and brand-related assets required a new owner.

  What changed. DefendTex acquired the intellectual property, trademarks and other assets with the stated intention of continued development and commercialization.

  Aftermath. The assets were preserved under successor ownership, although the available reference does not confirm a revived Metal Storm operating business.

  Source
• 2012Enter voluntary administrationOther

  Metal Storm faced commercial and operational difficulties in developing and commercializing its novel weapons technology.

  What changed. The company was placed into voluntary administration on 26 July 2012.

  Aftermath. The original company ceased operating as an active independent developer; its technology and related assets were later acquired by DefendTex.

  Source
• 2009Advance the MAUL launcherProduct launch

  Metal Storm sought to turn its stacked-projectile technology into a compact accessory and stand-alone launcher.

  What changed. The company reported the first shoulder-firing test of the MAUL at its Virginia facilities.

  Aftermath. The MAUL remained a development-stage product in the available reference material.

  Source
• 2003Explore civilian bushfire applicationsStrategy

  Metal Storm sought uses beyond military weapons for its electronically initiated projectile technology.

  What changed. It entered an agreement with Thunderstorm Firefighting Pty Ltd to support investigation of bushfire-fighting applications.

  Aftermath. No completed commercial civilian system is identified in the available material.

  Source
• 2000Reject development in ChinaStrategy

  The Chinese government reportedly offered funding to develop Metal Storm technology in China.

  What changed. J. Mike O'Dwyer declined the offer and informed the Australian Department of Defence.

  Aftermath. The reference records subsequent Chinese research interest in possible naval and armoured-vehicle applications, but does not document a completed Metal Storm development partnership.

  Source

• 2015DefendTex acquires Metal Storm assets

  DefendTex acquired Metal Storm’s intellectual property, trademarks and other assets with the intention of continuing development and commercialization.

  M&A
  Source
• 2012Metal Storm enters voluntary administration

  The company was placed into voluntary administration, marking the end of its operation as an independent active developer.

  Bankruptcy
  Source
• 2010Papua New Guinea correctional-services contract

  Metal Storm signed a reported contract to supply 500 MAUL launchers and 10,000 less-lethal barrels to Papua New Guinea Correctional Services.

  Other
  Source
• 2009MAUL completes reported shoulder-firing test

  Metal Storm reported the first shoulder firing of its MAUL electronically fired 12-gauge launcher at its Chantilly, Virginia test facilities.

  Product generationProduct launch
  Source
• 2007U.S. Navy purchases Metal Storm grenade barrels

  Metal Storm announced that the United States Navy was buying grenade barrels based on the company’s technology.

  Product launchOther
  Source
• 2005J. Mike O'Dwyer leaves Metal Storm

  The company’s inventor and leading technology figure departed after receiving a reported payout and pursuing a sale of part of his shareholding.

  Leadership change
  Source
• 2003Metal Storm enters a bushfire-technology agreement

  The company agreed to provide technology support to Thunderstorm Firefighting Pty Ltd for investigation of a civilian bushfire-fighting application.

  Other
  Source
• 2003Metal Storm receives American military funding

  Metal Storm received funding from the American military for development related to its weapons technology.

  Other
  Source
• 2000Metal Storm reports Chinese development interest

  Metal Storm said the Chinese government offered substantial funding to develop the technology in China. O'Dwyer declined and informed the Australian Department of Defence.

  Other
  Source
• 1997Metal Storm unveils a 36-barrel prototype

  The company presented an early 36-barrel stacked-projectile weapon prototype, drawing attention to its electronically initiated firing concept.

  Product launchProduct generation
  Source

1. Metal Storm