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Science | Military | Firearms

Firearms are one of the oldest and most evolved weapon systems. From flintlocks to automatic weapons and flamethrowers, learn how firearms have been used to wage wars and save lives.

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How Flamethrowers Work

When humans discovered fire, they learned to cook their food in a controlled environment. What came next? Flamethrowers, of course. What do flamethrowers have in common with their living counterpart -- fire breathers?


10 Innovations That Led to the Modern Bullet

 10 Innovations That Led to the Modern Bullet

Can you name 10 innovations that led to the modern bullets we use today? HowStuffWorks can walk you through 10 innovations that led to modern ammo. See more »

Does owning a gun change your behavior?

 Does owning a gun change your behavior?

Does owning a gun change your behavior? Learn how owning a gun may change your behavior on HowStuffWorks. See more »

10 Hallmarks of Assault Weapons — and What They Do

 10 Hallmarks of Assault Weapons — and What They Do

These 10 features can earn an ordinary firearm the 'assault weapon' label in the U.S. Learn more about what makes an assault weapon at HowStuffWorks. See more »

What's the difference between a semi-automatic weapon and a machine gun?

 What's the difference between a semi-automatic weapon and a machine gun?

What's the difference between a semi-automatic weapon and a machine gun? Find out how semi-automatic weapons and machine guns compare in this article. See more »

Gun Pictures

 Gun Pictures

These gun pictures show you some of the different types of guns. Check out these gun pictures. See more »

Top 5 Most Popular Guns - and Why

 Top 5 Most Popular Guns - and Why

The top 5 most popular guns are explained in this article. Learn about the top 5 most popular guns. See more »

What's the world's smallest gun?

 What's the world's smallest gun?

The world's smallest gun isn't just the smallest gun in the world: It's a debate topic among law agencies and collectors. Read about the world's smallest gun. See more »

How Shotguns Work

 How Shotguns Work

To do its job, a projectile must both make contact with the target and hit the target in a critical spot. With a wider stream, a shotgun is like using a can of spray paint if a rifle is like using a felt-tip pen. See more »

How Guns Work

 How Guns Work

Guns permeate society -- police officers carry them, wars are fought with them, normal citizens own them. These articles will show you how different types of guns function from trigger to barrel. See more »

How Revolvers Work

 How Revolvers Work

The revolver turned shooting a round into a one-step process, forever changing the face of crime, law enforcement and self-defense. Find out what goes on inside a revolver. See more »