Best .300 Blackout Muzzle Brakes [2020]

Are you currently on the market for a .300 Blackout muzzle brake for your AR-15? If so, you’ve come to the right place.

Best Budget Pick: VG6 Precision Gamma .300 Blackout Muzzle Brake

VG6 Precision Gamma .300 Blackout Muzzle Brake side

If you want a durable muzzle brake that won’t break the bank, the VG6 Precision Gamma could be the brake you are looking for. The Gamma is built out of heat treated stainless steel, and very precise CNC machining methods were used in its construction.

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Best Value Pick: Vais Muzzle Brake .30 Caliber
Vais Muzzle Brake .30 Caliber

The Vais .30 caliber muzzle brake represents a solid value thank to its rust and corrosian resistant design and the fact that it’s very easy to thread onto the end of a mil-spec AR-15 barrel.

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Best Overall Pick: Precision Armament AR M11 Muzzle Brake .30 Caliber
Precision Armament AR M11 Muzzle Brake .30 Caliber

The Precision Armament AR M11 Muzzle Brake is our top pick for a .300 Blackout muzzle brake thanks to its stainless steel construction, quality CNC machining, and easy thread-on design.

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While not totally necessary for your AR-15, a muzzle brake can still be a great accessory to have installed on your rifle if you are looking for a way to reduce recoil and muzzle rise. In fact, a muzzle brake can be one of the most effective accessories to add to your rifle or carbine to make it easier to shoot and permit faster follow up shots.

In this article, we’ll cover what a muzzle brake does and why you should strongly consider acquiring one, the top qualities to look for in a muzzle brake for your .300 Blackout AR-15 rifle, and then we’ll dive into the top three best .300 Blackout muzzle brakes for AR-15s on the market today and what makes them stand out from their competitors on the market.

Looking for an upper receiver to fit your build? Read our guide on the best .300 Blackout uppers. We found some great options.

What Is A Muzzle Brake and Why Do You Need One?

While not truly necessary for your AR-15, you may want to strongly consider getting a muzzle brake if you want to keep recoil and muzzle flip to the absolute minimum. The muzzle brake is designed to be attached to the end of your rifle, and redirect propellant gases away form the barrel and rifle with each shot. This serves the dual purpose of reducing recoil and muzzle rise at the same time, which will make it easier for you to fire follow up shots and increase your accuracy and comfort level.

Depending on the muzzle brake you’re using (in addition to the rounds and the rifle you’re shooting as well), you can reduce muzzle brake by anywhere from ten to fifty percent. How far the barrel profile is raised over your stock also plays a massive role in how much recoil is reduce by as well.

Muzzle brakes have quite an interesting history. For one thing, they were originally designed not for small arms, but rather for artillery pieces and anti-tank guns. The recoil from artillery guns can create serious issues as you can probably imagine, so muzzle brakes were developed to help keep recoil down. This made artillery and anti-tank guns easier to shoot, created less of a hazard for the soldiers operating the guns in the immediate vicinity, and also enabled the guns to increase their rate of fire on the battlefield.

It was only a matter of time before the concept was developed to reduce muzzle brakes drastically in size so they could be attached to the end of a rifle. Most muzzle brakes will be threaded onto the end of the barrel, while others can be twisted, clamped, or pinned on as well. Most muzzle brakes also use a venting system, where integrated ports or vents are drilled into the brakes to enable the gas to escape from the muzzle.

One of the downsides to muzzle brakes is that they can increase the noise of your rifle or carbine when firing, so to this is a tradeoff that you will have to contend with. However, the increase in noise can vary dramatically depending on the muzzle brake that you use as well. This is something else that you will need to research for each muzzle brake you’re considering before you bite the bullet and buy.

Why Go With The .300 Blackout?

There are numerous different calibers available for the AR-15, and many people can easily confuse them around. For example, several people confuse the .300 Blackout with the 6.8 SPC. Both the .300 Blackout and the 6.8 SPC share the distinction of being developed for the military as a potential improvement over the standard 5.56 and .223 Remington rounds.

The 6.8 was intended to be a better performing round at longer ranges while functioning out of the standard 16-inch AR-15 barrel. The .300 Blackout, on the other hand, was designed with the .300 Whisper round in mind. Specifically, the .300 Blackout was intended for the special operations units in the United States military, with the idea being that AR-15 carbines chambered for the .300 Blackout could potentially replace the 9mm submachine guns in use, such as the Heckler & Koch MP5. Numerous MP5 submachine guns were several decades old when the .300 Blackout was developed.

With the .300 Blackout, it was envisioned that special operations soldiers could be equipped with a six to nine inch barrel with a standard M4 receiver, bolt, and magazines like were used on the standard issue 5.56 caliber guns. All that would need to be replaced would be the barrels, at which point, soldiers would have a weapon very similar in size to a 9mm submachine gun but with greatly enhanced stopping power. Mentioning magazines, there are many compatible magazines from other calibers as well as some specifically designed .300 Blackout magazines.

The .300 Blackout also holds the distinction of being assigned to work with a suppressor, and to have greatly reduced noise out of a suppressor than a 5.56 rounds. Both the recoil and noise from the .300 Blackout, out of the right rifle, can become as minimal as a .22 LR.

Read also: Our picks for the best .300 Blackout lower receiver and our guide for choosing the best bolt carrier group.

Buyer’s Guide: What To Look For In A Muzzle Brake For Your .300 Blackout

These are the most important factors to consider when looking for a new muzzle brake for your .300 Blackout AR-15:


Not all muzzle brakes attach to the end of a barrel the same way, so you will carefully want to research the method of attachment for your muzzle brake before you purchase. Some are very easy to install and can be simply threaded or twisted on and off. But others are more complex, and will most likely need a gunsmith in order to get them properly attached.


While muzzle brakes are designed to reduce muzzle rise and recoil on your AR-15, you still don’t want your brake to be so large that it adds to much weight or length to end of your rifle either. A more compact muzzle brake will be best.

Suppressing Flash

Some muzzle brakes will come with flash suppressors on them, so your visibility will not be reduced in any meaningful way while firing. This is not a truly necessary feature to have, but it is still something to think about.

Rust and Corrosion Resistance

The best muzzle brakes will come with either a stainless steel or parkerized finish for good rust and corrosion resistance against rain, snow, and humidity. This will enable your muzzle brake to last longer and maintain good performance over the long term.

The 3 Best .300 Blackout Muzzle Brakes For 2020

Now that we’ve covered why you need to upgrade your AR-15 with a muzzle brake and the top qualities to look for in one, here are the top three best .300 Blackout muzzle brakes for 2020:

VG6 Precision Gamma .300 Blackout Muzzle Brake

VG6 Precision Gamma .300 Blackout Muzzle Brake side

The VG6 Precision Gamma .300 Blackout Muzzle Brake was released back in 2013, but has already established itself as one of the most popular muzzle brakes on the market today. Furthermore, VG6 Precision has also made a strong name for themselves as making some of the highest quality muzzle brakes on the market as well. The VG6 Gamma is a highly engineered muzzle brake that almost totally eliminates recoil out of your .300 Blackout AR-15.

The Gamma is actually a hybrid muzzle device that is designed to both eliminate recoil and keep muzzle rise to the absolute minimum. This should help to improve your accuracy, and also makes faster follow up shots much easier as well.

VG6 Precision used a number of cutting edge and state of the art engineering methods to make the Gamma muzzle brake. For instance, it is built completely out of heated stainless steel and using precise CNC technology. As an added bonus, it is built completely out of the United States.

The Gamma can be used with any .300 Blackout barrel between 10.5 up to 18.5 inches long. It utilizes 5.8×24 threading, and also ships with a crush washer.

When it comes to color, you can choose between bead blasted stainless steel or a black nitride finish, both of which are highly durable and very corrosion resistant against moisture as well.

VG6 Precision Gamma .300 Blackout Muzzle Brake


All in all, the Gamma is a very well constructed muzzle brakes that also can boast of an atheistically pleasing design and cutting edge machining methods. Built out of a high quality heat treated stainless steel using CNC precision methods, it’s very high quality. It’s also not a terribly expensive option, and comes with many features and qualities that you would expect only out of a higher end muzzle brake model.

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  • Very easy to install
  • High quality engineering
  • Manufactured in the United States
  • Comes with black nitride or grey silver bead blasted finish
  • Creates louder noise

Precision Armament AR M11 Muzzle Brake .30 Caliber

Precision Armament AR M11 Muzzle Brake .30 Caliber

The Precision Armament AR M11 Muzzle Brake is built using state of the art CNC machining methods. Precision Armament is a New York based company that specializes in making tactical accessories for firearms, including for AR-15s. Each Precision Armament product comes with a full lifetime guarantee from the manufacturer, the M11 Muzzle Bake is no exception.

The M11 comes with a rear symmetrical blast baffle and two compensator baffles, which serve to redirect gases upwards and to the sides away from the brake to help reduce recoil and muzzle rise, although this will admittedly create a much louder noise each time you shoot the rifle. But on the plus side, this system also keeps ground disturbance to a minimum as well.

The M11 brake is built out of a very high quality 400 stainless steel, and in a variety of different finishing options including matte stainless, bright stainless, or carbon matte black. Each of these options are rust and corrosion resistant and will hold up well to the elements.

Overall, a lot of careful engineering went into the M11, and you will notice a drastic reduction in kick and muzzle rise when you shoot your AR-15 rifle installed with it in comparison to shooting the rifle without it.

Precision Armament AR M11 Muzzle Brake .30 Caliber back

Overall, the Precision Armament AR M11 Muzzle Brake is an excellent choice for a brake thanks to its high quality stainless steel construction, precise CNC machining methods, and the fact that it is easier than most muzzle brakes to thread onto the end of a barrel. Noise reduction is admittedly not as effective on the Precision Armament as some other muzzle brakes on the market, but still it will be hard to go wrong with the Precision when it comes to quality and longevity.

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  • CNC machined
  • High quality stainless steel construction
  • Very easy to thread on
  • Noise reduction is not as effective as other muzzle brakes on the market

Vais Muzzle Brake .30 Caliber

Vais Muzzle Brake .30 Caliber

Vais Arms is a smaller company operating out of Texas that actually specializes in muzzle brakes. They have built a solid name for themselves in the muzzle brake world, and each of their muzzle brakes are high quality and aesthetically pleasing. The Vais .30 caliber muzzle brake is no exception.

On the Vais, you will find a symmetrical matrix of round vents, which serve three unique functions:

  1. Limit the amount of muzzle blast
  2. Reduce recoil to make the rifle or carbine easier to control
  3. Reduce the rise of the muzzle when shooting to permit faster follow up shots

The Venturi expansion chambers on the Vais work to redirect and disperse the gases that are emitted out of the rifle when shooting, which helps to keep recoil down to a minimum. Simply put, when you have the Vais installed on the barrel of your rifle you should notice that it is significantly easier to shoot.

The gases are dispersed with the aids of holes present on the bore (both perpendicularly and horizontally) that disperse gas and noise around the sides of the muzzle brake.

The Vais is available in either 416R stainless steel or manganese phosphate Parkerized steel, both of which are very rust and corrosion resistant and help the Vais to stand up well to the elements.

Vais Muzzle Brake .30 Caliber back

The Vais .30 caliber muzzle brake is an excellent muzzle brake with a thread on design that makes it very easy to attach or remove form the end of your AR-15s barrel. Available in either stainless or parkerized, both of which are very rust and corrosion resistant, the Vais will keep recoil to a minimum when in use.

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  • Thread-on design makes it very easy to attach and remove
  • Recoil is kept to a minimum when in use
  • Available in parkerized or stainless steel finishing
  • Thread pitch is not standard

Wrap Up

And that concludes our list of the top three best .300 Blackout muzzle brakes for 2020. If you are looking for a muzzle brake that you can use to help reduce recoil and muzzle rise on your AR-15, any one of the three options that we have covered here today represents a solid choice.

Featured image by u/ccguns

Written by Sniper Country Team

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