• Post category:Gun Barrels
  • Post last modified:May 13, 2023
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What is a 6.8 SPC barrel? 🧐

It is a type of firearm barrel. It was designed specifically for the 6.8x43mm Special Purpose Cartridge, or “6.8 SPC” for short.

6.8 SPC barrel

Features 😎

When searching for the best 6.8 SPC barrel, it is important to consider the features and attributes offered by different models. Here are some of the most common characteristics:

  • ✍️ Length – Different barrels vary in length, with shorter lengths providing a higher degree of accuracy when shooting at longer distances.
  • ✍️ Twist Rate – This is the number of times a bullet rotates in one linear foot. A higher twist rate can help stabilize heavier rounds over longer distances.
  • ✍️ Gas Port Size and Location – The size of the gas port and its location affects how quickly a firearm cycles, which affects accuracy when shooting at close range.
  • ✍️ Muzzle Threads – Barrels with threaded muzzles allow you to attach flash suppressors or other muzzle devices for improved accuracy and recoil reduction.
  • ✍️ Fluting – Barrel fluting increases heat dissipation, reduces weight and strengthens the overall construction of a barrel.
  • ✍️ Bore Type – Different barrels are designed with different bores, including button-rifled, hammer-forged, and so on.
Our Top Pick
Wilson Combat AR Threaded Barrel
These barrels are crafted from 416R rifle-rated steel in specialized factories using state-of-the-art computer-controlled equipment to meet precise technical specifications. Each barrel undergoes a meticulous hand-polishing process for a smooth bore and optimized feed ramps, followed by a rigorous final inspection to ensure it meets the highest standards of quality and performance. These barrels feature crisp CNC markings and are optimized for reliability with a chamber and gas port that has been designed to deliver consistent and dependable performance.
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Benefits 🤩

The 6.8 SPC barrel is an ideal option for users looking for better accuracy and range from their rifles.

  • 💥 This barrel provides higher velocities and increased accuracy.
  • 💥 It also improved recoil management, and reduced muzzle flash when compared to other barrels of the same size.
  • 💥 The barrel’s longer overall length also helps with reducing concussion and noise due to its slightly slower rate of fire than a shorter barrel rifle.

Benefits of 6.8 SPC barrel

⚙️ How to properly measure a barrel? ⚙️

To properly measure a barrel for 6.8 SPC, you must use calipers or a micrometer.

  • ➡️ To begin, you should measure the bore diameter of the barrel at its widest point, accounting for any irregularities in the bore such as rifling.
  • ➡️ You will also want to measure the chamber depth and throat dimensions of your barrel’s chamber to ensure that it is compatible with the type of ammunition you are using.
  • ➡️ Additionally, if possible, you should take measurements of the length and outside diameter of your barrel so that you can be sure it will fit into your firearm correctly.

🚨 It is also important to note that different manufacturers may have slightly different standards when it comes to measuring barrels, so be sure to consult their technical specifications before purchasing.

Our Selection 6 Best 6.8 SPC Barrel

ImageProductBrand
Yankee Hill Machine Barrel Ar-15 6.8 Spc YHM-80-TFYankee Hill Machine Barrel Ar-15 6.8 Spc YHM-80-TFYankee Hill MachineBUY
Daniel Defense Rifle Barrel Assembly 6.8mm SPCDaniel Defense Rifle Barrel Assembly 6.8mm SPCDaniel DefenseBUY
Wilson Combat AR Threaded BarrelWilson Combat AR Threaded BarrelWilson CombatBUY
Proof Research AR-Type Carbon Fiber BarrelProof Research AR-Type Carbon Fiber BarrelProof ResearchBUY
Thompson Center Contender G2 6.8mm Remington Barrel 06234202Thompson Center Contender G2 6.8mm Remington Barrel 06234202Thompson CenterBUY
Radical Firearms Complete Upper Assembly 6.8 SPC IIRadical Firearms Complete Upper Assembly 6.8 SPC IIRadical FirearmsBUY

1# Yankee Hill Machine Barrel

Yankee Hill Machine Barrel Ar-15 6.8 Spc YHM-80-TF

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Specification

Caliber: 6.8mm Remington SPC
Barrel Length: 16 in
Barrel Weight: 1.73 lbs
Barrel Thread: 1/2″ x 36

If you’re in the market for a high-quality barrel for your AR-15 chambered in 6.8 SPC, look at the Yankee Hill Machine Barrel. Our research has shown that this 16-inch barrel features a threaded design and a fluted carbine profile, making it both durable and aesthetically pleasing. Crafted with top-of-the-line materials and expert craftsmanship, you can trust that this barrel will last for years to come. So don’t wait – order it just now!

Pros
  • Threaded design for easy installation
  • Durable construction
  • Fluted carbine profile for improved stability
  • Aesthetically pleasing design
Cons
  • High price tag

 

2# Daniel Defense Rifle Barrel Assembly

Daniel Defense Rifle Barrel Assembly 6.8mm SPC

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Specification

Caliber: 6.8mm Remington SPC
Barrel Length: 18 in
Threads per Inch: 5/8×24
Barrel Weight: 2.50 lbs

The Daniel Defense Rifle Barrel Assembly is an exceptional choice for those seeking a barrel that is both strong and lightweight. Its heavy barrel profile, combined with a 1:11″ twist rate and mid-length gas system, make it a superior option for accuracy, reliability, and performance. The barrel is made using the cold hammer forging process, which has been known for producing the most accurate and long-lasting rifle barrels for decades. If you’re searching for a high-quality barrel that can withstand heavy use and deliver consistent performance, the Daniel Defense Rifle Barrel Assembly is an excellent choice.

Pros
  • Cold hammer forging process
  • 1:11″ twist rate
  • Mid-length gas system
  • Defect-free bore and consistent chamber for reliable shooting
  • Lightweight design
Cons
  • Not compatible with all handguards
  • Does not come with a muzzle device or flash hider

 

3# Wilson Combat AR Threaded Barrel

Wilson Combat AR Threaded Barrel

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Specification

Caliber: 6.8 SPC; 6.8mm Remington SPC
Barrel Length: 16 in
Barrel Weight: 36 oz
Barrel Profile: Ranger; Recon Tactical – Fluted
Gas Block Journal Size-Diameter: .750 in
Threads per Inch: 5/8×24
Gun Model: AR-15, M4; AR-15
Gas Block Journal Size-Length: 0.92 in (for 6.8 SPC)

Wilson Combat has established a strong reputation over the past two decades for crafting the highest quality custom tactical AR-10 rifles. The Wilson Combat AR Threaded Barrel is precisely crafted using the finest 416R rifle-rated steel and computer-controlled equipment to meet an exacting list of technical specifications. Based on our observations crisp CNC markings and a chamber and gas port optimized for reliability are standard on all of these barrels. If you’re in the market for a new 9mm AR barrel, trust Wilson Combat AR Threaded Barrelt to provide you with the best in the industry.

Pros
  • Match grade 416R stainless steel construction
  • Computer-controlled machining process
  • Hand-polished bore and feed ramps
  • Crisp CNC markings
  • Reliability chamber and gas port
Cons
  • More expensive than other
  • May require professional installation

 

4# Proof Research AR-Type Carbon Fiber Barrel

Proof Research AR-Type Carbon Fiber Barrel

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Specification

Caliber: 6.8 SPC; 6.8mm Remington SPC
Caliber: 6.8mm Remington SPC; 6.8 SPC
Barrel Length: 18 in; 16 in
Gas System Length: Rifle Length; Mid Length
Gas Block Journal Size-Diameter: .750 in
Threads per Inch: 5/8×24

If you need a lightweight steel alternative for your AR-Type rifle, then the Proof Research AR-Type Carbon Fiber Barrel might be just what you need. These barrels offer increased barrel life, extreme accuracy, and superior durability all in one device. The carbon fiber construction makes them up to 64% lighter than traditional steel barrels of similar contour, which can boost your shot velocity by a factor of two. Although full-length steel barrels offer more reliability, carbon fiber barrels can save you money on ammo and last for years to come. Get yours today to experience the difference for yourself.

Video review

Pros
  • Up to 64% lighter than traditional steel barrels
  • Increased barrel life and superior durability
  • Extreme accuracy for long-range shooting
  • Cost savings on ammo over time
Cons
  • Requires special care and maintenance

 

5# Thompson Center Contender G2 Rifle Barrel

Thompson Center Contender G2 6.8mm Remington Barrel 06234202

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Specification

Caliber: 6.8mm Remington SPC
Barrel Length: 23 in

Introducing the Thompson Center Contender G2 Rifle Barrel. It is a versatile and adaptable platform that offers simple barrel interchangeability, proven long-range accuracy, and the ability to switch between rimfire and centerfire cartridges. Our analysis of this product showed that the 23″ barrel is drilled and tapped for scope mount, making it a great choice for hunters and shooters who demand accuracy and versatility from their firearms. Order and try this awesome barrel today!

Pros
  • Easy switching between rimfire and centerfire cartridges
  • Streamlined grip frame and forend profile
  • Accuracy and caliber range of any hunt
  • Easy to change barrels, taking only minutes
Cons
  • Only compatible with Contender frames with serial numbers greater than 195000

 

6# Radical Firearms Complete Upper Assembly

Radical Firearms Complete Upper Assembly 6.8 SPC II

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Specification

Caliber: 6.8mm Remington SPC
Gun Model: AR-15
Gun Rail: KeyMOD; M-Lok

Looking to complete your AR-15 build with a reliable and accurate upper receiver? The Radical Firearms Complete Upper Assembly is a complete MIL-STD upper that’s perfect for both novice and experienced shooters. It easily attaches to any MIL-STD lower receiver and includes a 15″ MHR free float rail system that increases accuracy and keeps your hands cool during extended shooting sessions. This upper also features an A2 flash hider and M-Lok gun rail system, making it a versatile and functional choice for any style of shooting. Choose Radical Firearms Complete Upper Assembly and experience the quality and performance you deserve.

Pros
  • Complete MIL-STD upper
  • 15″ MHR free float rail system
  • Includes an A2 flash hider and M-Lok gun rail system
  • High-quality construction for reliable performance
  • Versatile choice
Cons
  • It may be too heavy for some shooters
  • More complex assembly process than other

 

How to change a barrel? 🛠️

Changing a barrel is a relatively simple procedure that can be done without the help of a gunsmith. However, it’s still important to use caution and ensure that all safety precautions are taken when handling firearms.

  • ⭕ To begin, make sure to unload the firearm and inspect it to ensure it’s unloaded. Remove any accessories or optics, if applicable, then take off the upper receiver from the lower receiver by removing the two takedown pins. Turn the firearm over so that you’re looking at the back end of the upper receiver.
  • ⭕ You will now need to remove three screws from around your existing barrel: one in front of each gas block and one behind. Once these screws are removed, you can take off the old barrel.
  • ⭕ Make sure to keep track of any shims that have been used to ensure proper alignment with the receiver.
  • ⭕ Now it’s time to install the new barrel and tighten down the three screws in a star pattern (front gas block screw first, then side-by-side for the rear gas block and receiver). Again, make sure all shims are properly aligned.
  • ⭕ Once everything is tightened down, you can place your upper receiver back on top of your lower receiver and secure it with two takedown pins.
  • ⭕ Lastly, check to make sure the barrel headspace is correct by using an appropriate gauge or by having a gunsmith inspect it professionally.

FAQ 🤠

What is the best length barrel for a 6.8 SPC?

🤔 When it comes to determining the best barrel length for a 6.8 SPC (Special Purpose Cartridge), there is no one-size-fits-all answer. It ultimately depends on your specific needs and preferences.

  • 💥 The standard barrel length for a 6.8 SPC is typically between 16-18 inches.
  • 💥 However, barrels can range anywhere from 10 inches to 24 inches in length.
What is the ballistics of a 6.8 SPC?

🤓 The 6.8 SPC (Special Purpose Cartridge) is a versatile round that is designed to offer superior performance over the standard 5.56 NATO round.

  • ⌛️ The bullet weighs between 85 and 120 grains, with a muzzle velocity of around 2,500 to 2,800 feet per second (fps).
  • ⌛️ The muzzle energy can range from 1,500 to 1,900 foot-pounds depending on the load, making it a potent round that is capable of taking down a variety of games.
  • 🎯 At 100 yards, the 6.8 SPC round is still traveling at a high velocity of around 2,200 fps, with a muzzle energy of around 1,300 to 1,600 foot-pounds. This makes it an excellent choice for longer-range shooting, and it can easily take down deer and other game at distances of up to 300 yards.
Does barrel length affect accuracy?

😉 Yes, barrel length can affect accuracy to some degree.

🔷 The length of the barrel can influence the velocity and stability of the bullet as it travels through the barrel. A longer barrel typically results in higher muzzle velocity, which can increase the accuracy of the bullet at longer distances.

❗ However, barrel length is not the only factor that affects accuracy. Other factors such as barrel quality, bullet weight, bullet design, and shooter skill can also play a significant role in determining accuracy.

Do longer barrels have more recoil?

🤔 The length of a barrel does not directly impact recoil.

➡️ Rather, recoil is determined by the amount of energy generated by the ammunition, the weight of the gun, and the design of the firearm’s action. However, longer barrels can sometimes contribute to the perception of increased recoil due to their added weight.

📌 It’s important to note that while barrel length doesn’t directly impact recoil, it can have an indirect effect on the shooter’s perception of recoil. A longer barrel can often result in a longer sight radius, which can make it easier for the shooter to keep the gun on target during recoil. Additionally, a longer barrel can often result in a longer overall length for the gun, which can make it more comfortable to shoot by spreading out the recoil over a larger area.

What is the most accurate rifling?

🟧 The most accurate rifling depends on the specific application and bullet being used. There are several common types, including:

  • 🔷 Conventional or “lands and grooves” rifling: This is the most common type of rifling and consists of a series of spiral grooves and lands (raised areas) cut into the barrel. It works well for a wide range of bullet shapes and is generally accurate.
  • 🔷 Cut rifling: This method involves cutting grooves into the barrel with a single-point cutting tool. It is a more precise method than conventional rifling and can produce very accurate barrels.
  • 🔷 Button rifling: This method involves pushing a tungsten carbide button through the barrel to create the rifling grooves. It is a fast and efficient method, but may not produce the same level of accuracy as cut rifling.
  • 🔷 Polygonal rifling: This type of rifling uses a series of rounded, polygonal grooves instead of traditional lands and grooves. It is often used in handguns and can produce very accurate barrels.

💣 In general, the most accurate rifling for a specific bullet will depend on factors such as the bullet’s shape, weight, and velocity. It is important to match the rifling type and twist rate to the specific bullet being used for optimal accuracy.

Conclusion 🙂

With the right research and product reviews, it is easy to find a quality 6.8 SPC barrel that meets all of your requirements while still staying within budget. Remember, when shopping around for barrels, always look at both performance specs as well as cost-effectiveness before making a purchase decision. Doing so will ensure that you end up with an excellent barrel that can handle anything you throw at it! 🥰❤️‍🔥

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Steven Turner
Steven Turner
1 year ago

I’m looking for a recommendation for a reliable manufacturer of an 18-inch 6.8 SPC barrel. Can anyone provide suggestions?

Mecamshua
Mecamshua
Reply to  Steven Turner
1 year ago

If you are set on having an 18-inch barrel, Daniel Defense Rifle Barrel Assembly is affordable and well-regarded.

Colby Jenkins
Colby Jenkins
Reply to  Steven Turner
1 year ago

I use Proof Research AR-Type Carbon Fiber Barrel. It’s very durable and high quality.

Vios
Vios
1 year ago

I have a friend who owns a 6.8 SPC with a barrel that’s around 20-21 inches long, but he wants to shorten it to reduce weight. I’ve heard conflicting opinions on whether the extra barrel length is necessary for the round to achieve optimal velocity. Some say that it was designed for barrels as short as 12-16 inches, while others argue that longer barrels are needed. Can anyone provide some insight on this?

Noble Walker
Noble Walker
Reply to  Vios
1 year ago

What is the use case for your buddy’s 6.8 SPC? As far as I know, the 6.8 SPC was designed to compete with the .300 Blackout/Whisper in terms of being able to perform well in both subsonic and supersonic modes. If he plans to use it for long-range shooting, then he will need the longer barrel length. On the other hand, if he plans to use it for shooting within 300 yards, then the length of the barrel doesn’t matter. Longer barrels are more helpful with heavier bullets, which may be necessary if he plans to use them for hunting purposes.

Jeffrey Barnes
Jeffrey Barnes
1 year ago

I’m looking for some second opinions on 6.8 SPC barrels. Does anyone have any personal experience with these barrels or know someone who has? I appreciate any input, thank you!

Leol
Leol
Reply to  Jeffrey Barnes
1 year ago

I’ve personally had great experiences with Proof Research AR-Type Carbon Fiber Barrel. I recommend using it!

Stefan Coleman
Stefan Coleman
Reply to  Jeffrey Barnes
1 year ago

In my experience, a 20-inch barrel might not be ideal for a 6.8 SPC as the powders typically used with this cartridge are more suited for shorter barrel lengths, around 14.5-16 inches. While you will still see an increase in velocity with a longer barrel, it won’t be as significant as with a 5.56, unless you’re handloading specifically for that purpose. 

Naabolf
Naabolf
Reply to  Jeffrey Barnes
1 year ago

I would recommend looking for a 16-inch barrel, especially if it’s intended for hunting or home defense, for example, Yankee Hill Machine Barrel. A lighter profile barrel would be preferable, but a government profile like the one you posted could work well for range shooting.