7 Best 6.5 Grendel Barrel for the Money {Reviews 2020}

A barrel has to be designed with precision, as it is an integral part of a rifle. The innovation in barrel manufacturing made today's rifles effective. The 6.5 Grendel is designed to reduce the recoil as well as for a high range of precision shooting. To achieve this, the barrel used in a rifle must be designed in harmony with the characteristics of 6.5 Grendel.

We will discuss the best 6.5 Grendel barrel and the essential aspects that must be considered before buying one. So, if you are looking forward to a new barrel for upgrading your 6.5mm Grendel AR-15 or you are trying to select the best barrel for building a rifle of your dreams, then this is a must-read article.

Are All 6.5 Grendel Barrels the Same?

A 6.5 Grendel is similar to the military standard 5.56 NATO concerning the casing size. But all 6.5 Grendel Barrels are not the same. Every AR-15 is identical from the exterior, but each AR-15 has distinct modifications, and this is similar in the case of 6.5 Grendel barrels too.

The primary difference among 6.5 Grendel barrels is their gas length system as some of the barrels use a gas system of full-length while some barrels use a carbine length gas system.

The choice of the gas system is related to the length of the barrel too. The barrel length determines the range of shooting. Smaller barrels are used for a short-range shot and vice-versa.

The other difference lies in the weight of the barrel that depends on the material used for manufacturing it. It can be fluting and contour. The material used in barrel manufacturing plays a vital role over a long period.

Additionally, the corrosion-resistant coating outside and inside also plays an important role.

Top 7 Picks of The Best 6.5 Grendel Barrel for the Money


This is a lightweight barrel that has excellent rigidity and stability as that of a massive bull barrel. The barrel comes in a length of 18," and 20" measurements for long-distance shooting and a rifle length gas tube are needed that are available separately.

Fiber AR-15 Barrels have 416R match-grade stainless steel inner core that is sleeved in a roll wrapped carbon fiber providing excellent rigidity, excellent cooling, and lightweight. The carbon fiber sleeve is three times stronger than steel and puts an air pocket between carbon and barrel. It allows air to flow around the inner barrel that enhances cooling. The air allows heat to dissipate quicker, preserving the barrel's life.

The vent holes present in the carbon fiber sleeve allows the internal heat to escape, enhancing the barrel cooling even more. Even after running consecutively sixty rounds, the barrel stays cool, and you can hold the Fiber AR-15 Barrels bare hands. The steel gives strength, and carbon fiber balances shock absorption. Another exciting feature includes the twist, which is 1:8, providing accuracy and the right balance in long-range shooting.

Key features

  • 416R stainless steel match grade inner barrel
  • Bull barrel external contour .875" O.D
  • About 95% of the carbon fiber wrap is separate from the inner barrel for a lot of heat dissipation
  • 1"-8 rifling
  • Needs a rifle-length gas system( available separately)



  • Looks great
  • Very lightweight
  • Improved accuracy
  • Great fit and design
  • Cool to touch even after a lot of rounds
  • A bit pricey


The Brownells barrel is a top-quality barrel available for a competitive price, providing peak performance. The 5R button rifling provides accuracy in consecutive shooting.

The barrel is made from 416-R stainless steel bar stock. It comes with a .750inch gas journal with tapered to a medium profile. The gas journal fits varieties of shooting requirements, whether at the range or in the woods.

Manufacturers have used the best quality stainless steel and come in the options of 18" and 24". The twist of 1:8 is perfect for long-range rifles. The 18" and 24" barrel provides the choice to choose as your shooting requirement. 18" is more for the close shoot and long-range while 24" emphasizes mainly on the range. No new engineering is done, making it vulnerable to heat. This is a perfect choice for those who want to attain the maximum accuracy while long-range shooting at a reasonable price.

Key features

  • Features 5R rifling
  • 1:8 twist rate offers accuracy having multiple bullet weights
  • Threaded muzzle having a thread pitch of 5/8x24 TPI
  • Target crown of 11-degree
  • Matching Type II bolt including



  • Affordable
  • Good construction
  • Improves accuracy
  • Good customer service
  • Heavyweight


These Faxon barrels are affordable with many standard features that are required for 6.5 Grendel. You can choose the barrel length of 18" or 20" as your preference.

Faxon's 6.5 Grendel heavy Fluted Barrel is straight flutes classic look that comes with 5R button style rifling providing the consistent accuracy potential in consecutive rounds. Unlike traditional rifling, the grooves and the lands are offset with 5R rifling that prevents distortion of the bullet as it travels down the bore.

The barrel is constructed from high-grade 416R stainless steel, and the fluted barrel is coated with nitride outside and inside making is resistant to corrosion and surface wear. The subtle twist of 1:8 is provided for long-range control and accuracy. The mid-length gas system is used by 18" barrel, and rifle-length gas system is used for 20" barrel. Generally, the rifle length systems are considered a better option.

The fluted contour is the most attractive design feature of this barrel. Fluting means the grooves on the barrel's exterior or down its length, and these flutes remove some weight making it lightweight barrel. It brings the contact of air with the barrel that allows quick cooling, and this is perfect for those who shoot a lot of time at the range.

Key features

  • 18" & 20" lengths available
  • 1-8" twist compatible with a wide range of bullet weights
  • 11° target crowned muzzle
  • Mid-length gas tube for the 18".
  • Rifle-length gas tube for the 20" barrel



  • Lightweight
  • Very accurate
  • Lifetime guarantee
  • Coating for extra protection
  • None


This barrel is suitable for those who want AR-15 rifles with maximum accuracy. It is popular amongst long-range shooters. The barrel is designed to push cartridges to their limits.

Criterion's barrel is constructed from 416R stainless steel with hand-lapped and honed rifling for uniformity of bore and a perfect internal finish that aids in barrel cleaning and offers maximum accuracy. The chambers are finely polished for the complete extraction and feeding.

The rifle gas system is the compatible and dimpled gas hole that is tuned for reliable function, including or excluding suppressor. 0.936" Gas block for easy installation and lock up. The lightweight barrel is perfect for long-range shooting. It is resistant to corrosion due to the use of superior quality stainless steel used for construction. The 11-degree target reduces muzzle damage. The material used in barrel manufacturing plays a vital role over a long period.

Key features

  • 11-degree target to reduce potential muzzle damage
  • Polished chambers
  • Hand-lapped rifling
  • 11-degree target



  • Gas holes opposite to port preventing screw shift
  • M4 feed ramps for smooth feeding
  • Gas ports ensure reliable cycling
  • Bit costly


JP Supermatch's superior quality barrels are constructed from high-quality stainless steel and provide flawless fit and function. It is air-gauged and treated cryogenically for cold bore shots.

The high-quality 416R stainless steel material makes it lightweight and prevents corrosion. The barrels have excellent accuracy with minimal thermal drift. Its extended barrel life makes it long-lasting. They have individual head-spaced enhanced bolt offering perfect fit and function.

The barrel length is 22," and the twist of 1:8 is suitable for long-range shooting accuracy. The rifle-length gas system is compatible with 22" barrel. Contour adds to the design features. The Enhance bolt is constructed from SAE 9310 steel that has a plastic core. The chromium nitride finish offers corrosion resistance.

Key features

  • Minimum thermal drift
  • Individual head-spaced enhanced bolt
  • Lightweight



  • Machine finish
  • Cryogenically treated
  • High-grade stainless steel
  • Above-average pricing


Criterion AR-15 Barrels is medium priced and offers accuracy in long-range shooting. It is easy to use and durable. The barrel is made from the best quality stainless steel.

The design feature of this barrel includes a Hybrid contour. This design makes it lighter and allows cooling quickly while providing an opportunity to shoot with accuracy and precision. The barrel length is 18," and a mid-length gas system assists with faster firing.

Except 18," the Criterion does not provide any other barrel length with the 6.5 Grendel fit but offers a choice of rifle length or mid-length gas system. The rifle-length gas systems are a bit heavier but recoil lesser. The twist of 1:8 is optimal for the 6.5 Grendel. The barrel is made in the USA

Key features

  • 1-8" twist for enhanced accuracy potential.
  • Consistent lands and grooves
  • 11° target crown
  • During firing screw-on gas, blocks do not shift



  • Improves accuracy
  • Easy installation
  • Hybrid contour
  • Durable
  • Only 18" barrel length option available

#7) AR-STONER Barrel AR-15 6.5 Grendel Heavy Contour 1 in 8" Twist Fluted Stainless Steel

The AR-15 6.5 Grendel barrel is a suitable choice for its accurate and potent cartridge. The barrel is made from the best quality stainless steel.

This has a heavy contour with 1:8 twists making it perfect for long-range shooting. It is built to ensure high accuracy in consecutive shooting. It includes 5/8-24 threaded muzzle and M4 feed ramps. The locator pin and the barrel extension are both involved with the product and factory-installed. Heavy contour makes it easy to handle. It is the perfect choice for a barrel if you are looking for a barrel at an affordable price. 18" barrel length needs mid-length gas tube and 20" requires rifle length gas tube.

Key features

  • Chambered in 6.5 Grendel;
  • 1:8 Twist
  • Heavy Contour
  • Fluted



  • Fluted
  • Easy installation
  • Improved accuracy
  • Great fit and design
  • High-quality material construction
  • Heavy-weight
Best Barrel for Grendel 6.5

Why Go With The 6.5 Grendel?

Some intermediate carbine cartridges compete to fill the space between 5.56mm and something with more range than a .308. The 6.5 Grendel effectively falls in the latter category. 6.5 Grendel packs punch more than a 5.56mm, and it is based on the .220 Russian cartridges. The other factors that make 6.5 Grendel worth to go with are:

  • Affordability
  • Performance
  • Compatibility with AR-15
  • Hunting Viability
  • Costs

The 6.5 Grendel is affordable as it costs about the same as 5.56mm, and it is less expensive than .308 ammunition. Moreover, the best Grendel barrels are more affordable as the 6.5 Creedmoor became popular. This made the building cost of a 6.5 Grendel rifle comparable to the manufacturing costs of any other AR-15.

  • Some Downsides

The 6.5 Grendel could be pushed to thousand yards, but it is not the excellent range precision powerhouse. It is not an ideal choice for extreme long-range shooting but perfect for those who want rounds having useful long-distance than the 5.56mm but not heavy as a .308 or specialized as a 6.5 Creedmoor. It suits best to semi-automatic rifles.

By correcting the upper receiver parts of AR-15, you can shoot the 6.5 Grendel out of AR-15. The 6.5 Grendel is a legal hunting round that may not be perfect in a bolt action rifle but can be used with AR-15. This will of more extended range and a real sporting rifle.

Choosing the Best 6.5 Grendel Barrels: Aspects to Consider Before Buying

If you are keen on buying a new barrel, then go for the best barrel without considering the cost because there are various astounding perks of choosing the best barrel for your 6.5 Grendel. The top-of-the-line barrel will increase accuracy, performance, weight, and look beautiful.

  • Rifling/Twist Rate
  • Length
  • Fluting/Contour
  • Durability

Consider the following aspects while buying a 6.5 Grendel barrel are:

  • Rifling/Twist Rate

The twist rate is simply the number of inches traveled by a bullet to take a single full rotation. It measures barrel's stability. For the 6.5 Grendel, the best twist rate depends on the bullet weight.

A barrel with a twist rate 1:8 refers that the barrel will travel down eight inches before completing one rotation. Lighter bullets tend to have a higher ratio than heavier bullets. A bullet weighing up to 160 grains has a ratio of 1:9 barrel twist while 80-grain bullet can have a twist rate of 1:12, which is considered excellent.

  • Length

The barrel length, as well as the length of the gas tube, is an essential consideration while buying a new barrel for your 6.5 Grendel. You need to have the right gas tube if you buy a 16-inch barrel. If you need to buy a barrel for long-range shooting, then a long barrel will be perfect such as 20+ inches. The long will be the barrel; the more room will be provided for gases to expand, which will propel the bullet to the much longer distances.

The length of the AR-15 barrel and gas system length impacts the accuracy of the long shoot. The longer the barrel, the more extended ranges shoot can take place. There are three AR-15 barrels:

  • carbine length
  • mid-length
  • rifle length.

These are the most common lengths. For long-distance precision shooting, you will require at least the rifle length (20 inches) or longer. However, the 18.5-inch barrel is suitable for most precision shooting applications. Make sure that barrel length should not compromise the weight of the barrel.

  • Fluting/Contour

You must have noticed that some barrels feature contours and textures over their surface. The removal of extra material is called fluting. This is done because a fluted barrel is light in weight and provides better cooling for long shooting period. Excluding heavy and long-range (more than 20 inches), you must buy fluted barrels.

  • Durability

Make sure that barrel is constructed of durable materials so it can be long-lasting. For AR-15 barrels, the durable materials are:

  • Titanium
  • Aircraft-grade aluminum
  • Stainless steel
  • Carbon fiber

Stainless steel is durable and very tough, and it is corrosion resistant better than other materials. It can absorb as well as release heat more effectively than other metals. Stainless steel barrels are good options for the 6.5 Grendel, whose one round produces more heat than different calibers.

When the barrel contains energy for a long duration, it heats up much faster, and the overall life shortens. Stainless steel ensures that the barrel contains minimum energy before releasing it. Along with the inherent durability, the corrosion and rust-resistant properties should be present to the outside barrel too. Stainless steel is very corrosion and rust-resistant giving a glossy and nice finish.


  • What is the best barrel length for the 6.5 Grendel optimum for hunting?

For hunting, the best two barrel lengths for the 6.5 Grendel are the 20" and 24". Shorter barrels are slightly lighter and easy to handle. Besides this, they have no added advantage and give up velocity. Shorter barrels are the perfect choice for general shooting or a utility rifle.

Longer length barrels have better accuracy, and 6.5 Grendel is optimum for long-range utilization. Still, portability and weight are important aspects to consider while choosing a long barrel.

  • How barrel weight affects performance?

A right barrel should have an appropriate weight (due to fluting and material) depending upon the intended use and its length. The modern barrels are made from different materials such as carbon fiber, stainless steel, and blued steel, and some models are made from nickel-based alloys and sleeved titanium.

The heat control, vibration, lifespan, and weight of barrel depending on the materials from which the barrel is made.

  • What is the best twist rate?

When choosing the barrel, the twist rate is an essential factor. The barrel with a slow twist does not have stability. The accuracy is at risk if the twist is fast. For 6.5mm Grendel cartridges, the twist 1:8 is a popular choice.

Final Words

The effectiveness of a rifle widely depends on a barrel. The accuracy over short and long distances is majorly defined by a barrel, so it is essential to choose the best 6.5 Grendel barrel. Investing in a right barrel will complement the accuracy and the range of the cartridge and prove to be a long-lasting and worthy investment.

The factors such as weight, contour, length, and twist rate must also be considered before buying. The best 6.5 Grendel will have the proper twist rate as that of a grain of bullets, fluted, have rust and corrosion resistance and be a mid or rifle length for superior performance at long ranges.

So, it is wise to invest in a barrel with all these specialties. However, it may be costly, but these features make it worth spending money so that you can enjoy shooting without disruption.

You may like our guides for best 6.5 Grendel scope here

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