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1 Million Rounds Per Minute: Meet the Metal Storm ‘Gun’

Metal Strom
One 20 mm (0.787 in) 578 rounds M61 Vulcan nose mounted 6-barreled Gatling cannon protects the pilot and his aircraft from close encounter.

Metal Storm, a 3 Minute Primer: Until the invention of the first repeating rifles in the middle of the 19th century, the average soldier could typically fire about three rounds per minute. The truly skilled might have been able to get off the occasional fourth round, which is why for centuries armies lined up in mass – it was essentially the only way to ensure that some of the rounds would hit their targets.

Weapons such as the Gatling gun and the Maxim machine gun changed things in a huge way. The latter was capable of firing 500-600 rounds per minute, and within decades weapons such as the General Dynamics M61A2 took rate of fire to an impressive 6,000 rounds per minute.

Yet even that impressive weapon pales in comparison to the Metal Storm, an experimental weapon platform that could fire a reported one million rounds per minute.

While that might sound like the latest high-tech super weapon, Australian-based Metal Storm Inc. actually started developing its 36 barrel prototype system in the 1990s. Unlike modern machine guns this weapon is unique in that it has no moving parts, but still manages to fire 180 rounds in less than one-hundredth of a second. With its special caseless 9mm ammunition, no armor in the world would be capable of stopping it.

The U.S. Navy was apparently impressed and in 2007 even announced that it would purchase the system for use on its ships. However, more than a decade later nothing has come to pass – but as Business Insider reported, this was both a result of legal issues with the contracts and its applications.

Having a weapon that can fire 1.62 million rounds in a minute, all traveling at speeds approaching Mach 5, may sound like the sort of weapon that every military would want but how and where it could be used remains an issue. A million 9mm rounds could cut through a tank like a hot knife through butter, but that tank would still have to be pretty close. Moreover, a target would need to remain directly in front of the weapon, which fires so quickly it couldn’t effectively even “sweep” a battlefield like those World War I machine guns.

So unless an army is going to charge down an alley, the defensive capabilities of the Metal Storm gun seem limited. This is made worse by the fact that it is also extremely heavy, requires plenty of prep time to set up effectively for a single-use and firing even a fraction of the ammunition is expensive – and much of it could go to waste.

However, the company’s designers had other ideas and this included a “scaled up” 40mm grenade launcher that utilizes a similar multi-barrel concept.

So for now the M134 Minigun will likely keep its place in the Guinness World Records for having the fastest rate of fire of a military weapon in service.

Peter Suciu is a Michigan-based writer who has contributed to more than four dozen magazines, newspapers and websites. He is the author of several books on military headgear including A Gallery of Military Headdress, which is available on Amazon.com. 

Note: The image is of an M61 Vulcan. 

Written By

Peter Suciu is a Michigan-based writer who has contributed to more than four dozen magazines, newspapers and websites. He is the author of several books on military headgear including A Gallery of Military Headdress, which is available on Amazon.com. Suciu is also a contributing writer for Forbes Magazine.

7 Comments

7 Comments

  1. David Weir

    December 6, 2021 at 4:06 pm

    I would have thought that a little lateral thinking might produce a viable ‘last resort’ defensive weapon for our ships. Take a Metal Storm and divide it into – say- ten (replaceable?) canisters. That gives one six by 100,000 round turrets. Marry that to a rotating platform and a suitable radar and the result would be a Goalkeeper-type close in defense array.

  2. Steve

    December 6, 2021 at 7:25 pm

    The Vulcan auto cannon in the original image is out of a F-18 hornet, it’s even sitting on the ground support equipment base that we put it on when we take it out of the jet, trust me I’ve worked on them for the last 18 years and it holds 550 rounds max in the drum located in the picture, completely useless images trying to represent the concept for a research and development project by the DOD. Poor writing and journalism.

  3. Peter Gonzales

    December 7, 2021 at 11:54 am

    I agree the value of a ship and sailors would be worth these
    Goal Keepers

  4. Sam Mcclellan

    December 7, 2021 at 1:07 pm

    The metal storm system was never intended for anti-personel, or anti-vehicle. I never even knew anybody ever thought that, till I read this. The designers never said it. I don’t know where the author got their info. They’re for missle defense, usually on ships, just like when a ship has a Vulcan, mounted on it. It’s meant to just throw a wall of lead at an incoming missle.

  5. Michael R Barnett

    December 7, 2021 at 9:06 pm

    It probably could be used as a naval CIWS where a wall of shells is useful in taking out incoming missiles as a last resort

  6. D. SMITH

    December 10, 2021 at 9:59 am

    THIS PIECE 0F CRAP WOULD CHOKE ON ONE LITTLE MISFIRE AND PROBABLY IMPLODE\EXPLODE KILLING EVERYONE INSIGHT!! NOT WORTH THE RISK. BULLETS WILL SOON BE A THING OF THE PAST. ALSO IT WOULD BE USELESS AGAINST ALIENS AS IS EVERYTHING ELSE. “LETSGOBRANDON”!

  7. BRIAN HUTCHINSON

    December 10, 2021 at 11:35 am

    I AGREE. AND HOW ABOUT THOSE ALIENS. WHEN ARE THEY GOING TO SHOW THEIR UGLY FACE?

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