Best 300 Blackout Barrels for 2024: Buying Guide Included

Introduction

Selecting the right .300 AAC Blackout barrel is not a decision to be taken lightly. Your choice will significantly influence the performance of your rifle, and it’s important to understand the factors that come into play when making this decision.

A barrel is more than just a tube; it’s the heart of your firearm. In this article, we’ll explore the world of the best .300 Blackout barrels, discussing their advantages, factors you should consider before purchasing one, and showcasing some of the best 300 blackout barrels available.

Advantages of the .300 AAC Blackout

Advantages of the .300 AAC Blackout

The .300 AAC Blackout, often referred to simply as .300 Blackout, has earned its place in the firearms community due to several key advantages:

Suppressed Shooting

One of the standout features of the .300 Blackout is its excellent performance when used with suppressors or silencers. This caliber was designed with suppressed shooting in mind, allowing you to enjoy shooting without the deafening noise often associated with firearms.

Adequate Range

While the .300 Blackout isn’t a long-range caliber like the .308 Winchester, it offers a respectable effective range, making it suitable for both short-range engagements and moderate-range shots.

Ammunition Compatibility

If you already own a rifle chambered in 5.56 NATO, transitioning to the .300 Blackout is relatively painless. You can often use the same magazines and bolt carriers, making it a cost-effective choice for those looking to expand their collection.

Versatility

The .300 Blackout cartridge can be loaded with various bullet weights, ranging from light supersonic rounds to heavy subsonic ones. This versatility makes it adaptable to a wide range of shooting scenarios, from home defense and target shooting to hunting.

How Long Should My Barrel Last?

The longevity of the best.300 Blackout barrels depend on various factors, including usage and maintenance. A well-maintained barrel can last anywhere from 10,000 to 20,000 rounds or even more. Here are some tips to help prolong the life of your barrel:

Regular Cleaning: Regularly clean your barrel to remove fouling, copper deposits, and carbon buildup. Neglecting this can accelerate wear and reduce accuracy.

Avoid Overheating: Excessive rapid firing can generate intense heat, causing the barrel’s throat to erode more quickly. Give your barrel time to cool between extended shooting sessions.

Proper Lubrication: Keep the barrel properly lubricated to reduce friction and wear on the rifling.

Use Quality Ammunition: Quality ammunition produces less fouling and can contribute to a longer barrel life.

Buyer’s Guide for .300 Blackout Barrels

 

When you’re in the market for some of the best .300 Blackout barrels, several critical factors should guide your decision. Let’s delve deeper into these considerations:

Barrel Length

blackout barrel length

Barrel length is a crucial aspect that significantly affects your rifle’s performance and intended use:

Short Barrels (8-10 inches): These are ideal for close-quarters engagements and tactical applications. They provide maneuverability and are well-suited for home defense and personal security. Do note that they will come with less accuracy and muzzle velocity as compared to longer barrels. 

Mid-Length Barrels (12-14 inches): Mid-length barrels offer a balance between maneuverability and accuracy. They are versatile and suitable for a wide range of applications, including hunting and general-purpose shooting.

Long Barrels (16 inches and above rifled barrels): Longer barrels (rifled barrels) maximize accuracy and muzzle velocity. These rifled barrels are preferred for precision shooting, hunting at extended ranges, and target shooting.

Choosing the right barrel length depends on your specific needs and shooting style. Consider where and how you plan to use your rifle to determine the most suitable barrel length.

Barrel Weight

lightweight vs heavyweight barrel blackout
lightweight vs heavyweight barrel blackout

Barrel weight is another critical factor that impacts your rifle’s balance, portability, and overall handling:

Lightweight Barrels: These barrels reduce overall rifle weight and are easier to carry for extended periods. They are ideal for shooters who prioritize mobility and quick target acquisition.

Heavy Barrel: A heavy barrel offers increased stability during sustained fire and can help reduce recoil. They are preferred for precision shooting and when accuracy is paramount.

The choice between lightweight and heavy barrels often comes down to personal preference and the intended application of the rifle. Consider how you plan to use your firearm and the trade-offs between weight and stability.

Building Material

The building material of your Blackout barrel plays a significant role in its durability, weight, and corrosion resistance:

Stainless Steel: Stainless steel barrels are known for their excellent corrosion resistance and longevity. They are suitable for all-weather shooting conditions and offer a polished appearance.

Chrome Moly Vanadium Steel: Chrome moly vanadium steel is durable and cost-effective. While it may not provide the same level of corrosion resistance as stainless steel, it still offers reliable performance.

Carbon Steel: Carbon steel barrels are budget-friendly but may require more maintenance to prevent rust. They are a practical choice for those looking to balance performance and cost.

The choice of material should align with your preferences, budget, and the environmental conditions you expect to encounter while shooting.

Contour

Barrel contour refers to the profile or shape of the barrel, and it affects both weight and heat dissipation:

Lightweight Contour: These barrels have reduced material and are lightweight, making them easy to carry and maneuver. They heat up quickly during rapid firing.

Heavy Contour: Heavy contour barrels have more material, offering increased stability during sustained fire. They are better at dissipating heat but add weight to the firearm.

Selecting the right contour depends on your shooting style and application. Consider whether you prioritize agility or stability in your shooting experience.

Twist Rate

Twist Rate explained

Twist rate refers to the rate at which the rifling inside the barrel twists, and it affects bullet stabilization:

1:7 or 1:8 Twist: These twist rates are common for Blackout barrels and are versatile, stabilizing a wide range of bullet weights from light to heavy.

1:9 or Slower Twist: These twist rates are better suited for lighter bullets. They may not adequately stabilize heavier projectiles.

Your choice of twist rate should align with the bullet weights you intend to use. A faster twist rate accommodates a broader range of bullet choices.

Rifling

The rifling inside the barrel consists of spiral grooves that give the bullet its spin. Two common methods of rifling are button and broach cut:

Button Cut Rifling: This method uses a hardened steel button to create the rifling grooves. It’s known for its precision and smooth finish.

Broach Cut Rifling: Broach cut rifling involves cutting the grooves using a broach tool. It’s a cost-effective method that still provides good performance.

While the rifling method can impact the barrel’s accuracy, the overall quality and consistency of the rifling are more important factors to consider when assessing a barrel’s performance.

Best .300 Blackout Barrels Review

Now, let’s explore some of the best .300 Blackout barrels available:

1. Faxon Firearms Blackout Gunner Profile

Faxon Firearms Blackout Gunner Profile

When it comes to .300 Blackout barrels, the Faxon barrel  is a standout option that offers a combination of performance, quality, and value. Let’s dive into the specifics:

Specifications:

  • Caliber: .300 AAC Blackout
  • Length: 10.5 inches
  • Twist Rate: 1:8
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: QPQ Nitride
  • Gas System: Pistol-Length
  • Weight: 1.19 pounds

Key Features:

Gunner Profile: The Gunner profile is designed to reduce weight while maintaining accuracy and heat resistance. This profile strikes a balance between maneuverability and performance.

Quality Construction: Faxon Firearms is known for its commitment to quality, and this pistol length barrel is no exception. It’s constructed from 4150 chrome moly vanadium steel, ensuring durability and longevity.

QPQ Nitride Finish: The Faxon barrel features a QPQ nitride finish, which enhances corrosion resistance and reduces friction for smoother operation and easier cleaning.

Pistol-Length Gas System: The gas system is well-suited for shorter pistol-length barrels like this one. It ensures reliable cycling and minimizes recoil.

Pros:

  • Accuracy: The 1:8 twist rate is versatile and stabilizes a wide range of bullet weights, contributing to excellent accuracy.
  • Lightweight: The Gunner profile keeps the weight down, making it suitable for those who value maneuverability without sacrificing performance.
  • Durability: Made from 4150 chrome moly vanadium steel, this barrel is built to last and withstand extended use.
  • Corrosion Resistance: The QPQ nitride finish not only provides a sleek appearance but also protects the barrel from corrosion.

Cons:

  • Limited Length: With a length of 10.5 inches, this barrel may not be the best choice for those seeking long-range accuracy. It’s more geared toward close to mid-range shooting.
  • Barrel Heat: The lightweight profile means this barrel can heat up more quickly during rapid firing, affecting sustained accuracy.

Final Verdict:

The Faxon Firearms .300 Blackout Gunner Profile pistol length barrel is an excellent choice for those who prioritize versatility, accuracy, and quality in a compact package. The faxon barrel is well-suited for home defense, tactical applications, and even hunting at moderate ranges.

While it may not be the best option for extended long-range shooting, its lightweight design and durability make it a valuable addition to any .300 Blackout build. Whether you’re an experienced shooter or a newcomer, this barrel offers a reliable and efficient solution for your firearm needs.

2. Rainier Arms Select 300 BLK Barrel

Rainier Arms Select 300 BLK Barrel

When it comes to selecting a Blackout barrel, the Rainier Arms Select 300 BLK Barrel stands out as a reliable and versatile choice. Let’s take a closer look at its specifications, key features, pros, and cons:

Specifications:

  • Caliber: .300 AAC Blackout
  • Length: 10.5 inches
  • Twist Rate: 1:8
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: Melonite
  • Gas System: Pistol-Length
  • Weight: Approximately 1.45 pounds

Key Features:

Chrome Moly Vanadium Steel: These pistol length barrels are constructed from 4150 chrome moly vanadium steel, known for its durability and resistance to wear and tear.

Melonite Finish: The Melonite finish not only enhances the pistol length barrels’ corrosion resistance but also reduces friction for smoother operation and ease of maintenance.

Gas System (Pistol length): The gas system is optimized for shorter barrels like this one, ensuring reliable cycling and minimal recoil.

Pros:

  • Versatile Twist Rate: The 1:8 twist rate strikes a balance between stabilizing various bullet weights, making it versatile for different shooting scenarios.
  • Quality Construction: Rainier Arms is known for its commitment to quality, and this barrel lives up to that reputation, offering reliable performance over time.
  • Corrosion Resistance: The Melonite finish provides excellent protection against corrosion, extending the barrel’s lifespan.
  • Reliable Gas System: The gas system enhances reliability, particularly in shorter barrels, reducing the chances of malfunctions.

Cons:

  • Limited Length: With a length of 10.5 inches, this barrel is better suited for close to mid-range shooting. It may not be the best choice for those seeking extended long-range accuracy.
  • Weight: While not excessively heavy, this barrel is slightly heavier than some other options in its class, which could impact the overall balance of your firearm.

Final Verdict:

The Rainier Arms Select 300 BLK Barrel is a solid choice for shooters seeking a reliable and versatile .300 Blackout barrel. Its quality construction, Melonite finish, and shorter gas system ensure that it can handle a variety of shooting scenarios while resisting corrosion and wear.

While it may not be the absolute lightest option available, its combination of accuracy and durability makes it a valuable addition to any .300 Blackout build. Whether you’re using it for home defense, tactical applications, or hunting at moderate ranges, this barrel delivers dependable performance you can count on.

3. Wilson Combat Match Grade Barrel .300 AAC Blackout

Wilson Combat Match Grade Barrel .300 AAC Blackout

When searching for a top-tier .300 Blackout barrel, the Wilson Combat Match Grade stainless steel Barrel in .300 AAC Blackout is a premium choice that delivers exceptional accuracy and performance. 

Specifications:

  • Caliber: .300 AAC Blackout
  • Length: 16 inches
  • Twist Rate: 1:8
  • Material: Stainless Steel
  • Finish: Matte Bead-Blasted
  • Gas System: Mid-Length
  • Weight: Approximately 2.0 pounds

Key Features:

Stainless Steel Construction: This stainless steel barrel is crafted from stainless steel, known for its outstanding corrosion resistance, durability, and heat resistance.

Precision Manufacturing: Wilson Combat is renowned for its precision craftsmanship, and this barrel is no exception. It undergoes meticulous manufacturing to ensure tight tolerances and superb accuracy.

Mid-Length Gas System: The mid-length gas system offers a smooth and reliable cycling experience, reducing recoil and enhancing overall shooting comfort.

Pros:

  • Outstanding Accuracy: Wilson Combat’s match-grade reputation shines through with this barrel. Its 1:8 twist rate and precise manufacturing make it capable of delivering exceptional accuracy.
  • Durable Stainless Steel: The stainless steel construction not only provides corrosion resistance but also ensures a long barrel life, even under heavy use.
  • Reliable Gas System: The mid-length gas system contributes to a softer recoil impulse and reliable cycling, enhancing overall shooting comfort and control.
  • Quality Finish: The matte bead-blasted finish not only looks great but also reduces glare and reflections.

Cons:

  • Length: With a length of 16 inches, this barrel may not be the best choice for those seeking a compact, maneuverable firearm. It’s more suitable for mid-range to long-range shooting.
  • Weight: The stainless steel construction adds weight to the barrel, which can affect the overall balance of the firearm. It’s essential to consider your preferences and shooting style.

Final Verdict:

The Wilson Combat Match Grade Barrel in .300 AAC Blackout is a premium choice for shooters who demand the utmost accuracy and quality in their firearms. This barrel’s stainless steel construction, precision manufacturing, and mid-length gas system make it a standout option for mid to long-range shooting scenarios.

While it may not be the lightest or most compact choice, its focus on accuracy and durability make it an excellent match for precision shooting, hunting, and other applications where top-tier performance is non-negotiable.

If you’re seeking uncompromising quality, this barrel won’t disappoint. 

4. Ballistic Advantage Modern Series 10″ .300 AR Rifle Barrel

Ballistic Advantage Modern Series 10″ .300 AR Rifle Barrel

The Ballistic Advantage Modern Series 10″ .300 AR Rifle Barrel offers shooters an attractive combination of affordability and performance. 

Specifications:

  • Caliber: .300 AAC Blackout
  • Length: 10 inches
  • Twist Rate: 1:7
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: QPQ Nitride
  • Gas System: Pistol-Length
  • Weight: Approximately 1.2 pounds

Key Features:

Chrome Moly Vanadium Steel: The Ballistic Advantage barrel is constructed from 4150 chrome moly vanadium steel, this barrel ensures durability and resilience under various shooting conditions.

QPQ Nitride Finish: The QPQ nitride finish not only enhances the barrel’s corrosion resistance but also reduces friction for smoother cycling and easier cleaning.

Pistol-Length Gas System: The gas system contributes to reliable cycling and minimizes recoil, enhancing overall shooting comfort.

Pros:

  • Affordable Barrel: This barrel provides solid performance at a competitive price point, making it an attractive choice for budget-conscious shooters looking to build an AR pistol.
  • Balanced Twist Rate: The 1:7 twist rate stabilizes a wide range of bullet weights, making it versatile for different ammunition choices and shooting scenarios for your AR pistol..
  • Durable Construction: Made from 4150 chrome moly vanadium steel, this barrel is built to withstand extended use and resist wear and tear.
  • Corrosion Resistance: The QPQ nitride finish not only looks sleek but also adds a layer of protection against corrosion.

Cons:

  • Limited Length: With a length of 10 inches, this barrel (AR Pistol) is more suitable for close to mid-range shooting. It may not be the best option for those seeking extended long-range accuracy.
  • Weight: While not excessively heavy, this barrel has some weight to it, which could affect the overall balance of your firearm.

Final Verdict:

The Ballistic Advantage Modern Series 10″ .300 AR Short Barreled Rifle offers a solid balance of performance and affordability, making it an appealing choice for a wide range of shooters. Its chrome moly vanadium steel construction, QPQ nitride finish, and gas system for shorter barrel lengths ensure durability, corrosion resistance, and reliable cycling.

While it may not be the lightest or the longest option available, it delivers dependable performance for close to mid-range shooting, making it suitable for home defense, tactical applications, and recreational shooting.

If you’re seeking a budget-friendly barrel that doesn’t compromise on quality, this option is worth considering. 

5. CMMG, Inc .300 AAC Blackout Barrel

CMMG, Inc .300 AAC Blackout Barrel

The CMMG, Inc .300 AAC Blackout Barrel is a dependable choice for those seeking reliability and performance. 

Specifications:

  • Caliber: .300 AAC Blackout
  • Length: 16 inches
  • Twist Rate: 1:7
  • Material: 4140 Chrome Moly
  • Finish: Salt Bath Nitride
  • Gas System: Carbine-Length
  • Weight: Approximately 1.97 pounds

Key Features:

Chrome Moly Construction: The barrel is crafted from 4140 chrome moly steel, known for its strength and durability.

Salt Bath Nitride Finish: The salt bath nitride finish enhances corrosion resistance, reduces friction for smoother operation, and simplifies maintenance.

Carbine-Length Gas System: The carbine-length gas system ensures reliable cycling and minimizes recoil, contributing to overall shooting comfort.

Pros:

  • Affordability: This barrel provides good performance without breaking the bank, making it a cost-effective choice for budget-conscious shooters.
  • Balanced Twist Rate: The 1:7 twist rate stabilizes a wide range of bullet weights, making it versatile for different ammunition choices and shooting scenarios.
  • Durability: Constructed from 4140 chrome moly steel, this barrel is built to last and can handle extended use.
  • Corrosion Resistance: The salt bath nitride finish not only looks sleek but also adds a layer of protection against corrosion.

Cons:

  • Length: With a length of 16 inches, this barrel may not be the best choice for those seeking a compact, maneuverable firearm. It’s more suitable for mid-range to long-range shooting.
  • Weight: The barrel’s weight, though not excessive, adds some heft to the firearm. It’s important to consider your preferences and shooting style.

Final Verdict:

The CMMG, Inc .300 AAC Blackout Barrel strikes a balance between affordability and performance, making it a solid choice for a wide range of shooters. Its chrome moly steel construction, salt bath nitride finish, and carbine-length gas system ensure durability, corrosion resistance, and reliable cycling.

While it may not be the lightest or the shortest option available, it delivers dependable performance for mid-range to long-range shooting, making it suitable for hunting, target shooting, and other applications where reliability matters.

If you’re looking for a budget-friendly barrel that offers good value without sacrificing quality, this option is worth considering. 

Conclusion

In the world of the best.300 Blackout barrels, the choice you make is pivotal to the overall performance of your firearm. As we conclude our exploration of some of the top options available, here are some key takeaways to keep in mind:

Diverse Needs: Your choice of barrel should align with your intended use. Consider whether you need a barrel for close-quarters engagements, mid-range precision, or long-range accuracy.

Balancing Act: Factors like barrel length and weight significantly impact your rifle’s balance and handling. Choose wisely to match your shooting style and preferences.

Material Matters: The construction material of the barrel is a crucial aspect. Stainless steel offers corrosion resistance, while chrome moly vanadium steel and carbon steel are durable and budget-friendly options.

Quality Over All: Regardless of your budget, prioritize quality and craftsmanship. A well-manufactured barrel can enhance accuracy and longevity.

Maintenance: Regular cleaning and maintenance are essential to extend the life of your barrel. Neglecting these tasks can lead to reduced accuracy and performance.

Personal Touch: Your choice of the best .300 Blackout barrel should be a reflection of your shooting style and preferences. Each of the reviewed barrels has its own strengths, so consider what matters most to you.

Ultimately, the best .300 Blackout barrel is the one that aligns with your specific needs and shooting goals. Whether you prioritize affordability, precision, or versatility, the market offers a range of options to cater to your requirements.

FAQ

Here are some frequently asked questions to further assist you in your .300 Blackout barrel selection:

Can I use a .300 Blackout barrel with my existing AR-15 lower receiver?

Yes, you can often use a .300 Blackout barrel with your existing AR-15 lower receiver. The .300 

The blackout cartridge is designed to fit and function in standard AR-15 lower receivers. However, ensure that your upper receiver is compatible with the best .300 Blackout cartridge, and if necessary, replace or modify the bolt and magazine.

What is the advantage of a suppressor-ready barrel for .300 Blackout?

A suppressor-ready barrel typically has threading at the muzzle end, allowing you to attach a suppressor or silencer. This is advantageous for shooters who want to reduce noise and recoil, making shooting more comfortable and less disruptive.

Is .300 AAC round suitable for hunting?

Yes, .300 Blackout is a versatile cartridge suitable for hunting. It offers good performance at short to moderate hunting ranges and is particularly effective when using supersonic ammunition for medium-sized game. However, ensure you comply with local hunting regulations and choose the appropriate bullet type for your intended game.

Are all Blackout barrels compatible with both supersonic and subsonic ammunition?

Most .300 Blackout barrels are designed to be compatible with both supersonic and subsonic ammunition. However, it’s essential to check the specific twist rate of your barrel, as this can affect the stability of different bullet weights.

Generally, a 1:7 or 1:8 twist rate is versatile for both supersonic and subsonic loads.

Do I need to use a different buffer and recoil spring with a .300 Blackout barrel?

While some shooters use a heavier buffer and recoil spring to optimize the cycling of .300 Blackout rifles, it’s not always necessary. Many standard AR-15 buffers and recoil springs work well with .300 Blackout, especially if you use an adjustable gas block to fine-tune the gas system.

What kind of optic is best for a .300 Blackout rifle?

The choice of optic depends on your shooting preferences and intended use. Red dot sights and holographic sights are popular for quick target acquisition at short to medium ranges. Magnified scopes are suitable for precision shooting and hunting at longer distances. Consider your specific shooting scenarios when selecting an optic.

Is reloading Blackout ammunition worthwhile?

Reloading .300 Blackout ammunition can be cost-effective and allows you to tailor your loads to your rifle’s performance. It’s particularly valuable if you shoot a lot or require specialized loads, such as subsonic rounds for suppressed shooting. However, reloading requires knowledge, equipment, and safety precautions.

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