Best 300 Blackout Barrels in 2021

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Winner
Best Value
Kit for building your own weapon!
Kit for building your own weapon!
Barrel / Upper
PSA 10.5" PISTOL LENGTH 300AAC BLACKOUT 1:8 NITRIDE 9" LIGHTWEIGHT M-LOK FREEDOM BARREL / UPPER
PSA 7" 300AAC BLACKOUT 1/7 NITRIDE 6" LIGHTWEIGHT BARREL / UPPER
PSA 16" PISTOL-LENGTH 300AAC BLACKOUT 1/8 NITRIDE 13.5" LIGHTWEIGHT M-LOK BARREL / UPPER
PSA 16" PISTOL-LENGTH 300AAC BLACKOUT 1/8 PHOSPHATE 13.5" BARREL / UPPER SET
PSA 16" PISTOL-LENGTH 300AAC BLACKOUT 1/8 PHOSPHATE 13.5" BARREL / UPPER SET
Our Test Result
Test Result 9.8/10 Excellent June 2021
Test Result 9.6/10 Excellent June 2021
Test Result 9.4/10 Very good June 2021
Test Result 9.8/10 Excellent June 2021
Test Result 9.5/10 Very Good June 2021
Value for Money
Performance
Pros
  • Bolt-Action rifle
  • Tight shooting groups, great accuracy
  • Ideal for hunting big game
  • Really clear optics of the scope
  • Can knock down even big game with a lot firepower
  • Nikon scope is very reliable & sturdy, can handle a lot recoil
  • Very easy to sight in, great for beginners
  • Smooth & reasonable recoil
  • Nice & clear image of the scope
  • Great accuracy
  • Awesome for hunting & target practice
  • Very powerful rifle
  • Bullets feeding is very reliable & faster than normal 30-06 rifles
  • Trigger pull is very smooth
  • Very good build quality
Cons
  • None
  • Trigger pull could be improved
  • On the heavier side
  • Scope should be added
  • Not for beginners
Recommended by us
Winner
Barrel / Upper
PSA 10.5" PISTOL LENGTH 300AAC BLACKOUT 1:8 NITRIDE 9" LIGHTWEIGHT M-LOK FREEDOM BARREL / UPPER
Our Test Result
Test Result 9.8/10 Excellent June 2021
Value for Money
Performance
Pros
  • Bolt-Action rifle
  • Tight shooting groups, great accuracy
  • Ideal for hunting big game
Cons
  • None
Recommended by us
Check Price
Best Value
Barrel / Upper
PSA 7" 300AAC BLACKOUT 1/7 NITRIDE 6" LIGHTWEIGHT BARREL / UPPER
Our Test Result
Test Result 9.6/10 Excellent June 2021
Value for Money
Performance
Pros
  • Really clear optics of the scope
  • Can knock down even big game with a lot firepower
  • Nikon scope is very reliable & sturdy, can handle a lot recoil
Cons
  • Trigger pull could be improved
Recommended by us
Check Price
Barrel / Upper
PSA 16" PISTOL-LENGTH 300AAC BLACKOUT 1/8 NITRIDE 13.5" LIGHTWEIGHT M-LOK BARREL / UPPER
Our Test Result
Test Result 9.4/10 Very good June 2021
Value for Money
Performance
Pros
  • Very easy to sight in, great for beginners
  • Smooth & reasonable recoil
  • Nice & clear image of the scope
Cons
  • On the heavier side
Recommended by us
Check Price
Kit for building your own weapon!
Barrel / Upper
PSA 16" PISTOL-LENGTH 300AAC BLACKOUT 1/8 PHOSPHATE 13.5" BARREL / UPPER SET
Our Test Result
Test Result 9.8/10 Excellent June 2021
Value for Money
Performance
Pros
  • Great accuracy
  • Awesome for hunting & target practice
  • Very powerful rifle
Cons
  • Scope should be added
Recommended by us
Check Price
Kit for building your own weapon!
Barrel / Upper
PSA 16" PISTOL-LENGTH 300AAC BLACKOUT 1/8 PHOSPHATE 13.5" BARREL / UPPER SET
Our Test Result
Test Result 9.5/10 Very Good June 2021
Value for Money
Performance
Pros
  • Bullets feeding is very reliable & faster than normal 30-06 rifles
  • Trigger pull is very smooth
  • Very good build quality
Cons
  • Not for beginners
Recommended by us
Check Price

A rifle’s barrel is maybe the most intricately crafted component. It is one of the most important characteristics that affects a weapon’s reliability. However, when it comes to gun precision, a barrel is absolutely necessary.

We’ll talk about the significance of a barrel’s duration and the characteristics it influences. We’ll also go through the characteristics to search for when selecting a barrel for your 300 Blackout weapon.

Finally, we’ll go through a rundown of the best 300 Blackout barrels on the market, which will save you a lot of time and money in the long run.

Guide: Barrel length

The length of the barrel seems to be the most basic and first consideration for most people. This is, without a doubt, a vital and, in the end, deciding consideration when selecting a barrel. Velocity, accuracy, maneuverability, noise, and recoil are all considerations that are specifically influenced by barrel length.

A longer barrel contains more rifling grooves, which gives the projectile more surface space to spin on (also known as twist rate). As a result, the projectile is stabilized and maintains its ballistic properties over long distances.

Sighting

Furthermore, a larger barrel has a longer sighting plane (the gap between the front and rear sights), which increases targeting and, as a result, precision.

Speed

The next factor is velocity. More space for the powder to burn and the gases to spread is provided by a longer barrel. This generates more force and propels the projectile at a higher speed, extending its distance.

Recoil and Noise

For the same purpose, longer barrels are louder and have fewer recoil (albeit a minor difference).

Precision

A longer barrel is needed to shoot a buck beyond 250 yards. Shorter barrels, on the other hand, may be used to reliably target small game at close ranges.

Maneuverability

The length of your barrel must also be determined by the purpose for which it would be used. Longer barrels are ideal for long range firing, but their obstructive scale makes them unsuitable for CQB and related applications.

What to Look for While Buying a 300 Blackout Barrel

Certain considerations must be recognized before selecting a barrel for your 300 Blackout. The best balance of these elements in your barrel would be determined by the rifle’s targeted use.

Best 300 Blackout Barrels

Material, length, rifling, twist, contour, and profile are all aspects to consider.

Components

Starting with the components, today’s barrels come in a range of configurations, varying from blued steel to alloy composites and carbon fiber. The barrel would be stronger if the steel is more advanced. However, since composites are more expensive, the price is also a consideration.

Length

The length, which we have already covered, is the next factor to remember.

Twist

Furthermore, the twist rate of the barrel (rotation: length traveled in inches) is important. Higher twist speeds yield more precise shots in general, making them ideal for supersonic ammo and long-range shots.

Profile and contour

The barrel’s contour and profile often play a significant role. Heavy barrels are more durable, cool faster, and allow for more precise follow-up shots. They are, though, very heavy. Lighter barrels are better for shooting since they have a slower rate of fire. A carbon fiber barrel with a fluted contour barrel is a great combination of these two forms.

Review: The Best 300 Blackout Barrels

As a semi-automatic AR-15 rifle, the 300 Blackout Rifle was clearly not made for sniping. Range, speed, maneuverability, and ammunition capability are all well-balanced in this rifle. Specific uses of the firearm, however, can differ.

As a result, we’ve assembled a comprehensive list of the best 300 Blackout barrels on the market to assist you in finding the right item for your gun. When selecting these barrels, many of the previously listed factors were considered.

The Best 300 Blackout Barrel: PSA 10.5″ PISTOL LENGTH 300AAC BLACKOUT 1:8 NITRIDE 9″ LIGHTWEIGHT M-LOK FREEDOM Barrel / UPPER

Best 300 Blackout Barrel: PSA 10.5" PISTOL LENGTH 300AAC BLACKOUT 1:8 NITRIDE 9" LIGHTWEIGHT M-LOK FREEDOM UPPER

Pros

  • Easy to install
  • Great design
  • Works very reliable

Cons

  • Quite heavy

A 10.5-inch barrel with a pistol gas device is included with this product. The barrel has a thick profile and is well-suited to constant firing. For 300 Blackout loads weighing between 115 and 165 grains, the 1:8 twist rate is optimal. The SOCOM contoured barrels are made of 4150 V steel and have a SOCOM contour.

They are excellent for shooting, tournaments, and training. The nitride finish extends the barrel’s service life and makes washing smoother. When fixed on the weapon, it has a lot of headspace. This product is compatible with a variety of AR-15 platforms and provides excellent value for money in terms of consistency and efficiency.

Without breaking the bank, these heavy profile barrels are a decent choice for about any 300 Blackout use.

Verdict

Both supersonic and subsonic loads may be fired at near range with the heavy barrels. They’re useful for hunting, competitiveness, self-defense, and training.

2nd Best 300 Blackout Barrel: PSA 7″ 300AAC BLACKOUT 1/7 NITRIDE 6″ LIGHTWEIGHT

Best 300 Blackout Barrel: PSA 7" 300AAC BLACKOUT 1/7 NITRIDE 6" LIGHTWEIGHT

Pros

  • Very easy to maneuver with
  • Withstands even heaviest of fire rates
  • Very reliable since its Nitride Coated

Cons

  • None

PSA 7″ 300AAC BLACKOUT 1/7 NITRIDE 6″ LIGHTWEIGHT upper, which includes a barrel, has a distinctive “gunner” profile that provides the ideal balance between weight, ergonomics, and heat dissipation. They have a slight pencil profile ahead of the gas block to reduce weight and improve handling, whereas the section behind the gas block has more substance to survive excessive heat during several firings or shots.

The gas system on the 7 inch barrels is pistol-length.  The Black QPQ Nitride finish, combined with an NP3-coated barrel extension, increases barrel life and makes cleaning easier.

The gunner profile is well-suited to fast maneuverability and shooting. The muzzle is threaded with 5/8-24 threads to accommodate a variety of muzzle systems. These barrels have the new 5R rifling, which increases the weapon’s overall precision.

Verdict

PSA barrels have a gunner profile that makes them suitable for military uses as well as strenuous monitoring and shooting in the forests. They are appealing to the eye and simple to manage.

3rd Best 300 Blackout Barrel: PSA 16″ PISTOL-LENGTH 300AAC BLACKOUT 1/8 NITRIDE 13.5″ LIGHTWEIGHT M-LOK BARREL / UPPER

Best 300 Blackout Barrel: PSA 16" PISTOL-LENGTH 300AAC BLACKOUT 1/8 NITRIDE 13.5" LIGHTWEIGHT M-LOK UPPER

Pros

  • Perfect twist rate
  • Cool design
  • Great Quality, its gonna last you a long time

Cons

  • Flash hider could get a bit loose after a long time but still works

This PSA 16″ PISTOL-LENGTH 300AAC BLACKOUT Barrel & Upper has a 16-inch length and a robust 416R stainless steel body. The majority of the barrel’s body has been wrapped in a carbon fiber sleeve to minimize total weight while maintaining reliability and power.

The carbon fiber sleeve protects the majority of the barrel and has breathing gaps. These holes easily dissipate heat, enabling you to take faster follow-up shots without sacrificing precision. The barrel was rifled with the new 5R button rifling technologies and has a 1:8 twist rate, which is a good balance for a variety of applications.

The barrel’s 16-inch length is suitable for short-range hunting, tournaments, and training. Similarly, for the 300 Blk caliber, the pistol-length gas tube has been found to be the most suitable gas system length. The muzzle is threaded with 5/8×24 threads, allowing muzzle devices to be installed.

As opposed to barrels with identical profiles, the barrel weights 3.7 lbs, which is a significant change.

Verdict

The PSA barrel strikes the perfect balance between power and weight. Hunting, tournaments, and practice are also great uses for the barrel.

Best 300 Blackout Barrel kit: PSA 16″ PISTOL-LENGTH 300AAC BLACKOUT 1/8 PHOSPHATE 13.5″ BARREL / UPPER SET

Best 300 Blackout Barrel kit: PSA 16" PISTOL-LENGTH 300AAC BLACKOUT 1/8 PHOSPHATE 13.5" SET

Pros

  • Military grade spec coat
  • Very durable material
  • Heat Optimization

Cons

  • Very long in length

Are you looking for a barrel kit? This is your answer. This barrel was hammer forged from Chrome Moly Vanadium Steel and chrome-lined on the inside for increased durability. Chrome-lined barrels are used in the military for the same purpose.

The barrel is 16 inches long and has a pistol-length gas system. The barrel has been contoured for optimal heat control when you fire off several shots in a short period of time. The barrel’s 1:8 twist rate is ideal for stabilizing projectiles of various weights and speeds.

For any defects in the construction, the chamber was thermal pressure checked and magnetic particle examined. The barrel is phosphate-coated to mil-spec to prevent the finish from deteriorating over time. It comes all furnished and ready to use.

The barrel’s shape and profile make it suitable for short-range shooting and tactical use. Since this is a barrel with a high profile, the length reduces the weight significantly.

Verdict

The 10.5″ short barrel has a heavy shape that can be used for shooting and military uses at short ranges. The barrel has been engineered and checked to military standards and has excellent heat dissipation.

2nd Best 300 Blackout Barrel kit: PSA 7.5″ PISTOL-LENGTH 300AAC 1/8 PHOSPHATE 7″ LIGHTWEIGHT M-LOK MFT BATTLELINK PISTOL KIT

Best 300 Blackout Barrel kit: PSA 7.5" PISTOL-LENGTH 300AAC 1/8 PHOSPHATE 7" LIGHTWEIGHT M-LOK MFT BATTLELINK PISTOL KIT

Pros

  • Low Profile
  • Very resistant to corrosion due to a Black Nitride Finish
  • Very durable

Cons

  • Short in length

This one is a hybrid of a barrel and a gas system package, and it’s available for a really low price. The barrel is made of 4150 steel and has a nitride finish for excellent hardness and ease of cleaning. The barrel has pistol length with 7.5 and has a 1:8 twist with a wide range of applications.

It also has a carbine-length gas system, which gives the projectile a boost in velocity. A.750 inch low profile gas block, carbine gas hose, and a roll pin are included with the kit. The steel gas block helps you to build a personalized rifle that meets your needs. Clamp-on and slide-on versions of the kit are available.

Because of their low profile, these barrels can conveniently be hidden under a free-float handguard for a more compact appearance and more gripping surface. The slim profile of this commodity makes it suitable for varmint hunting. The muzzle end is threaded with 5/8-24 threads such that muzzle systems can be installed.

This barrel and gas device package is perfect for building a personalized 300 Blackout weapon at an affordable price.

Verdict

This combo package is long-lasting, reasonably priced, and helps you to customize your current gas system. Furthermore, the value for capital is outstanding.

Final thoughts

The 300 Blackout offers a great balance of strength, ballistics, and range. The best barrel will help you achieve many of these attributes.

The length of a projectile has a significant impact on its trajectory, accuracy, noise, and recoil. When looking for a good 300 Blackout barrel, you can think about things like material, contour, profile, length, gas system length, weight, and twist rate.

The importance of barrel lengths for rifles

The barrel length is an important factor in gun building, which in practice regularly stimulates discussion. One of the most important parameters here is the bullet speed. However, it would be wrong to focus only on this parameter. In fact, the barrel contour also plays an important role.

If we look at the hunting rifles of our grandfathers, we regularly find barrel lengths of 600 millimeters and much more, even with medium calibers. In the decades before World War II and in the first post-war decades, shorter barrels can be found almost without exception on the fully-stocked rifles.

For some years now, the trend in everyday hunting has been clearly moving towards shorter rifle barrels. Thus, most of the large series manufacturers – from cylinder bolt action rifles in the medium calibers to the .30-06 Springfield – offer their hunting bolt action rifles with barrel lengths below the 600 millimeter mark as standard. In addition to this, customers demand solutions for several reasons. They are not only looking for a rifle for driven hunts, but also for the narrow hunting turrets that are common in the hunting grounds, which make every centimeter of weapon length feel disadvantageous.

When deciding on a guided hunting rifle with a relatively short barrel, the question of course inevitably arises as to the extent of the loss of power and the resulting consequences. This cannot generally be answered with a fixed formula. There are too many parameters that are important for the bullet speed. Case geometry, caliber, case volume, bullet type, bullet material and the burning behavior of the propellant powder are the most important factors on the cartridge side.

However, the internal profile of the barrel and the number of grooves also have an influence. In practice, it is therefore not easy to obtain objective data on the interaction between barrel length and ballistic performance. If you take two rifles of the same caliber but different barrel lengths, you will not obtain an objective, generalizable statement about the loss of performance with a shorter barrel, even with the same cartridge laboratory, due to the barrel inner dimensions.

The only method – and even then the result can only apply to this gun-cartridge combination – is to shorten the barrel of a gun in small steps.

Such experiments have shown in practice that barrel shortening does not affect the practical suitability of medium calibers, which are mainly found in our domestic hunting grounds when hunting hoofed game, to a limited extent.

The barrel length and the parameters of the cartridge are directly related and must be matched to each other.

Even with standard rifle calibers with case lengths in the range of 60 to 65 millimeters, such as 7 x 64, 7 x 65 R and .30-06 Springfield, there are usually differences in velocity of 30 m/s to about 50 m/s between the barrel length of 660 millimeters and 510 millimeters, whereby the burning behavior of the propellant charge used should not be underestimated.

Best 300 Blackout Barrels

Even the magnum cartridges in the dimensions of .300 Winchester Magnum and 7 mm Remington Magnum have a performance loss of hardly more than 50 m/s at the mentioned barrel difference.

The same applies to modern short magnums, such as .300 WSM. In view of the usual hunting distances of less than 200 meters, in many hunting grounds less than 100 meters, this loss of performance is to be overcome. The target ballistic effect is hardly affected by this in practice. Especially when shooting roe deer at short and medium distances, a few meter seconds less bullet speed can even be advantageous with regard to the formation of hematomas. Whether a .30 rifle bullet with a weight of 11.7 grams hits a piece of wild boar at 760 m/s or “only” 720 m/s during driven hunts will hardly make any difference to the hunting success. The bullet construction is there in practice of far greater importance.

Things are a bit different with high performance cartridges. These are supplied with the most progressive propellants and have oversized case volumes. Whoever chooses a .300 RUM, a .30-378 Weatherby Magnum or a .338 Lapua Magnum wants performance. This performance can only be achieved with long Best 300 Blackout Barrels, otherwise it is not possible to achieve almost complete burn-up of the propellant in the barrel. With the cartridges mentioned above, 650 millimeter long barrels are the lower limit from a practical point of view. Ideal lengths are in the range of 700 to 750 millimeters.

In addition to the significant loss of performance, these cartridges supplied with progressive powders also have an extreme muzzle flash with shorter Best 300 Blackout Barrels. Although this will also occur with the barrel shortening of standard cartridges, which is justifiable from a performance point of view, it is generally accepted as a rule.

The barrel length and the parameters of the cartridge are directly related and must be matched to each other.

Even with standard rifle calibers with case lengths in the range of 60 to 65 millimeters, such as 7 x 64, 7 x 65 R and .30-06 Springfield, there are usually speed differences of 30 m/s to about 50 m/s between the barrel length of 660 millimeters and 510 millimeters, whereby the burning behavior of the propellant charge used should not be underestimated.

Best 300 Blackout Barrels

Even the magnum cartridges in the dimensions of .300 Winchester Magnum and 7 mm Remington Magnum have a performance loss of hardly more than 50 m/s at the mentioned barrel difference.

The same applies to modern short magnums, such as .300 WSM. In view of the usual hunting distances of less than 200 meters, in many hunting grounds less than 100 meters, this loss of performance is to be overcome. The target ballistic effect is hardly affected by this in practice. Especially when shooting roe deer at short and medium distances, a few meter seconds less bullet speed can even be advantageous with regard to the formation of hematomas.

Whether a .30 rifle bullet with a weight of 11.7 grams hits a piece of wild boar at 760 m/s or “only” 720 m/s during driven hunts will hardly make any difference to the hunting success. The bullet construction is there in practice of far greater importance.

Things are a bit different with high performance cartridges. These are supplied with the most progressive propellants and have oversized case volumes. Whoever chooses a .300 RUM, a .30-378 Weatherby Magnum or a .338 Lapua Magnum wants performance. This performance can only be achieved with long barrels, otherwise it is not possible to achieve almost complete burn-up of the propellant in the Best 300 Blackout Barrel. With the cartridges mentioned above, 650 millimeter long barrels are the lower limit from a practical point of view. Ideal lengths are in the range of 700 to 750 millimeters.

In addition to the significant loss of performance, these cartridges supplied with progressive powders also have an extreme muzzle flash with shorter barrels. Although this will also occur with the barrel shortening of standard cartridges, which is acceptable from a performance point of view, it is generally acceptable. Furthermore, the reloader can control this problem within limits by the choice of propellant powder. With short cartridges supplied with medium-fast powders, such as the .308 Winchester, there are hardly any problems up to barrel shortening to 470 mm.

In addition to the compromise on barrel length, there is even the advantage that short barrels with the same outer diameter are more stable against vibration than longer barrels. As is well known, from the point of view of precision, the short thick barrel is the better option compared to a long thin barrel.

In order to keep the Best 300 Blackout Barrel vibrations within limits that are favorable for precision, a long barrel should be accompanied by a stronger outer contour. Both factors lead to more weapon weight.

In practice, it is not enough to choose a long Best 300 Blackout Barrel for the best possible conversion of the propellant charge into power. This is the only way to keep the muzzle deflection, which varies slightly from shot to shot, within practical limits.

Best 300 Blackout Barrels

It is therefore imperative that clear text is used in consultation with the customer. If you want a high-performance cartridge in your hunting rifle, you have to sacrifice manageability and carry considerably more weight than standard cartridges of the same caliber group. An example: a hunting repeater in .30-06 Springfield with a 550 millimeter barrel and a weapon weight of about 7.05 lbs is practical.

For a .300 RUM rifle, the barrel length cannot be less than 660 mm, and if you also want the corresponding precision, which is particularly important for long shots, the barrel should not be less than 19 mm in outer diameter at the muzzle.

These irrevocable rules mean that precision shooters should choose the strongest possible barrel contours. In the benchrest competitions, the minimum barrel length and the maximum outer contour are therefore specified in the rules and regulations. If you want to shoot beyond the 300 meter mark, there is no getting around the best possible barrel length for high performance.

A typical example of an entry-level rifle in this market segment is the Remington 700 Long Range presented by Remington last year, which has a 660 millimeter barrel and an outer diameter of 21 millimeters at the muzzle. Despite its lightweight plastic stock, a weapon weight of 9.44 lbs is the inevitable consequence and banishes this type of weapon primarily to shooting ranges in the US.

It is important to know that even with small rifle cartridges the game with the barrel shortening downwards has its limits due to the internal ballistics. For example, a .223 Remington with a barrel shortening from 650 millimeters to 250 millimeters, depending on the laboratory, will have to reckon with a drop in performance at the bullet’s initial speed of 200 to 250 meter seconds.

This shows that the Best 300 Blackout Barrel shortening is only feasible within certain limits from a practical point of view.

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