Muzzle Brake vs Compensator vs Flash Hider: Learn The Difference thumbnail image

Muzzle Brake vs Compensator vs Flash Hider: Learn The Difference

Preston Arnet   |   Oct 31st 2019

Probably the most common mistake in the gun community is referring to a magazine as a ‘clip’ (this is a huge pet peeve and I will address this in a later article), but a very close second is confusing a muzzle brake, flash hider, and compensator. Many people may not know the difference between these muzzle devices, may have wrong information, or just may not see why it matters. Despite looking similar, they serve very different purposes, and they can range you anywhere from $10 to $150. So what's the difference?

Muzzle Brake:muzzle brakes

Muzzle Brakes come in many shapes and sizes, with vary degrees of effectiveness

Also referred to as a compensator, a muzzle brake is a device connected to the end of a barrel that redirects a portion of the propelled gasses to combat muzzle rise, linear movement, and recoil. Muzzle brakes direct gasses up, to the sides, or backwards in order to achieve the prior goals, typically making the brake extremely loud--so please wear ear protection.

A good way to understand muzzle brakes is to look at Newton’s third law: for every action, there is an equal and opposite reaction. So when a brake redirects hot, fast moving gasses upwards, the muzzle is then pushed down with the same force as the gasses leaving. This is how muzzle brakes can control muzzle flip, and perceived recoil.

There are even muzzle brakes on the market like the Ares Armor EEFIN-A MKII block, that let you tune and adjust where the gasses are directed. This gives each shooter a personalized block based on his or her preferences—a very cool concept.


  • Lightens recoil impulse significantly
  • May reduce muzzle rise


  • Can be expensive
  • Creates a concussive effect, very loud

Flash Hider (or Flash Suppressor)flash hider

An example of how widely Flash Hiders can vary in design styles

First and foremost, let’s forget the preconceived notion that muzzle flash is unburned powder. This is a common misconception. What that flash actually is, is extremely hot gasses (usually around 3,600 degrees) expanding rapidly when meeting cooler ambient air. These hot gasses leave the end of the barrel and create a sort of bubble. The ‘flash’ that we see is actually this gas bubble becoming incandescent and briefly crossing the visible spectrum. In simpler terms; hot gasses make a bright light.

In order to negate this burst of visible light, flash hiders create turbulence. By blending the hot gasses with cooler ambient air in a disruptive pattern, there can no longer be a large bubble to glow, and the gas is dissipated in smaller sections.

More than likely if you have an ‘off the shelf AR15’ you probably have an A2 flash hider, commonly referred to as a ‘birdcage’ design. This flash hider is the most common design you’ll see, and exactly what is standard on our troops rifles over seas. The bottom is solid to prevent you from creating a dust signature when firing from the prone position, and it is an overall acceptable flash hider. It doesn't provide stellar results, but that's to be expected from the government. They can be picked up for about $10, making it the cheapest option by far. 


  • Helps to keep your rifle fire concealed at night
  • May aid in slight muzzle-rise reduction
  • Typically the most affordable option


  • Does not significantly help control the gun
  • May not be effective on shorter barrels



Compensators like this one from ODIN Works look pretty mean too.

A compensator, much like a muzzle brake, is designed to reroute expelled gasses in order to achieve less recoil and muzzle movement. Whereas the brake tends to aid greatly in reduced recoil and only slightly in lessened muzzle movement; the compensator does the exact opposite. Mitigating recoil is a compensators secondary goal, with less muzzle rise or linear movement as it's primary objective. Perfect for calibers that don't boast a lot of recoil, the compensator helps the shooter stay on target for quicker and more accurate follow up shots.


  • Greatly reduces muzzle movement
  • Helps dull out perceived recoil
  • Offers real-world benefits to real-world civilian shooters


  • Can be expensive
  • LOUD (don't plan on being friends with your neighbors)

build kit

Don't want to be stuck with a muzzle device you don't want? Build Kits, like those offered by 80% Arms, let you make the right decision for your build

What Muzzle Device Should You Go With?

The differences are pretty few and very clear. A flash hider tries to disrupt as much gas as possible, while the brake wants to reroute gas to control a recoil impulse. Flash hiders may help minimally with reducing recoil, but mainly just hides flash from the naked eye. Muzzle brakes actually tend to increase flash as well as noise, while greatly minimizing recoil and muzzle flip. Some devices, like the  SureFire WarComp will incorporate both features into one device. It won't be the best in either category, but offers you a pretty good compromise.

The question you need to ask yourself when choosing your muzzle device is “what is my intended purpose?” Do you do a lot of nighttime hunting? You may want to consider a flash hider to preserve your night vision. Not your situation? A muzzle brake or compensator will help with accuracy, follow up shots, and recoil--all of which are very important. The flash hider, well it mostly just helps to hide you from bad guys-- and since your father-in-law already knows where you live; the flash hider isn’t going to help much. 

Don't want to be stuck with a muzzle device you don't want? Our 80 build kits let you make the right decision for your build. Shop Today!