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How Fast Can You Fire An Ar-15? Rate Of Fire By Caliber

The rate of fire is one of the most important aspects of any firearm, especially for rifles. A fast-firing rifle is one that will let you get your shots off more quickly than one that has a slow fire rate.

A standard semi-auto AR15 chambered in .223/5.56mm can fire up to 45 rounds per minute, allowing the user to adjust and compensate for center mass as they are firing. Full auto and binary triggers will greatly increase the rate of fire.

If you’re looking to purchase an AR-15 and want to know how fast it can shoot, this guide will tell you all about AR-15’s rate of fire by caliber. Read on to learn more about this awesome gun and its fire power.

What AR Has The Fastest Fire Rate? 

Most modern rifles have a fire rate of about 300 rounds per minute (RPM). This means that, in one minute, you will shoot 300 rounds from your firearm.

The AR-15 is the most popular rifle worldwide and it can easily fire as many as 800 – 1200 RPM depending on the version of the gun, caliber, and trigger.

In contrast with the AR-15, AK-47 rifles have an average fire rate of about 700 RPM. The AK-47 is also a popular rifle used by militaries and law enforcement around the world

The AR-10 is a semi-automatic rifle that is similar to the AR-15. It has a lower rate of fire, which means you can expect it to shoot at around 330 RPM. The AR-308 is another recent semi-automatic rifle similar to the AR-15 and it has an average rate of fire of about 450 RPM.

What Is The Fire Rate Of An Ar-15?

  • 5.56 NATO has a fire rate of 700-900 RPM
  • 7.62 NATO has a fire rate of 550-750 RPM

The AR-15 (rifle) has a fire rate of 700–900 rounds per minute. The M16A1 has a rate of fire of 600 RPM. The M14E2 (also known as the M21 sniper rifle), which can not be found in any form today, was capable of firing up to 750 rounds per minute.

The fire rate of the AR-15 is limited by the gas system, which can be adjusted to work with any ammunition type. The M16A1 has a higher rate of fire than the AR-15 because it uses more powerful ammo (5.56x45mm NATO) and does not have a buffer tube in its stock.

I use either Brownells, Palmetto State Armory, or Optics Planet to buy parts, that way I always know what I’m getting and that it will actually show up.

How Fast Can A Full Auto Ar-15 Shoot?

Not only can a full auto AR-15 shoot 800-900 rounds per minute, but it’s also illegal to own one. In order for civilians to purchase an automatic weapon such as the M16A2, they must first obtain a special license from the Bureau of Alcohol, Tobacco and Firearms (ATF).

Second, they must pay a $200 tax on top of any other fees imposed by their state. Finally, gun owners may not receive their license unless they prove “good moral character” through references and criminal background checks conducted by local law enforcement agencies.

In addition to these restrictions on owning an automatic rifle by civilians in most states—and even those who do have licenses often cannot get their hands on one due to supply and demand—there are several types of firearms that are banned outright under federal law including machine guns manufactured after 1986 (unless registered with ATF prior to May 19th 1986 or made prior)

Does Ammo Affect the Rate Of Fire?

Yes. The speed of the bullet is directly related to how many bullets you can fire per minute. A 9mm bullet travels faster than a .45 ACP round, which in turn travels faster than a .223 Remington (5.56x45mm) round.

The higher your caliber, the more force it has and therefore the harder it is for your gun’s recoil spring to absorb that recoil energy—so if you’re firing a high-caliber rifle like an AR-15, your rate of fire will be slower than if you were using a shotgun or handgun.

The length and weight of your barrel also determine how fast your weapon will cycle rounds; longer barrels are heavier but allow more room for gas expansion and thus higher rates of operation compared with shorter barrels.

In addition, wider tubes allow more gas expansion and thus potentially higher rates of operation as well as velocity—but this isn’t always true because sometimes wider tubes can choke off gases or increase friction inside the chamber when firing some calibers too fast (like 5.56 mm rounds).

When it comes to rate of fire, one thing is clear: the faster the bullet, the faster the rate of fire. This isn’t just theory—it’s supported by data. In this image from a study by Dr. Guy Smith, you can see how different calibers (the size of the bullet) affect firing speed.

The longer your barrel is, the faster your gun will shoot as well; a 20-inch barrel will let out more gas than a 16-inch one and therefore send bullets downrange more quickly.

So what does all this mean? If you want maximum speed in your AR-15 (or any other firearm), select ammo with large caliber and high velocity (velocity refers to how fast something travels).

You’ll also get better results if you have an extended barrel length like 18 inches or longer—but don’t worry about that unless there is some specific reason why those extra two inches are necessary!

What Is The Rate Of Fire By Caliber

The rate of fire by caliber is:

  • 5.56 (.223): 1200 RPM
  • 6.8 SPC: 1150 RPM
  • 7.62 NATO: 1000 RPM (heaviest)
  • 9mm: 950-1000 RPM (lightest)
  • 10mm Auto: 800-900 RPM (heaviest)

The AR-15’s rate of fire is measured in rounds per minute, or RPM. The higher the number, the faster your gun can shoot. When you take into account all of these factors, there are many different ways that you can customize your weapon to fit your shooting style


It is important to know the fire rate of an AR-15 so that you can make sure you have the right gun for your needs.

If you are looking for something with a fast rate of fire, then maybe consider getting one with a gas piston operating system. It will give you more power and better accuracy than other options available on the market today.