Affiliate Disclosure: AmmoCave.com sometimes gets paid for listings, through sponsors or affiliate programs like Lucky Gunner, Optics Planet, Brownells, Cabelas, Academy Sports & Outdoors, Rainier Arms, Palmetto State Armory, Sportsman’s Guide, Ammo.com, Ammo Man, Primary Arms, MidWayUsa, Amazon, eBay, etс. Clicking a link helps keep AmmoCave.com free, at no extra cost to you!
Authors: Each article is verified by AmmoCave's expert team. Professional hunters, firearm trainers, gunsmiths, and gun experts write the articles. AmmoCave Team independently researches, tests, reviews, and uses recommendations from our community of gun owners. We may earn commissions from shopping links.
Note: The views and opinions expressed in this article are those of the authors and do not necessarily reflect any agency's official policy or position. The articles are for informational purposes only, share your opinions about Best 6.8 SPC Barrel in the comments and join the discussions. Let's share 💬 our ammo & gun experiences together!
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.
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.
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.
⚙️ 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
1# Yankee Hill Machine Barrel
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!
2# Daniel Defense Rifle Barrel Assembly
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.
3# Wilson Combat AR Threaded Barrel
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.
4# Proof Research AR-Type Carbon Fiber Barrel
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.
5# Thompson Center Contender G2 Rifle Barrel
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!
6# Radical Firearms Complete Upper Assembly
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.
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 🤠
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! 🥰❤️🔥
I’m looking for a recommendation for a reliable manufacturer of an 18-inch 6.8 SPC barrel. Can anyone provide suggestions?
If you are set on having an 18-inch barrel, Daniel Defense Rifle Barrel Assembly is affordable and well-regarded.
I use Proof Research AR-Type Carbon Fiber Barrel. It’s very durable and high quality.
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?
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.
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!
I’ve personally had great experiences with Proof Research AR-Type Carbon Fiber Barrel. I recommend using it!
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.
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.