6 Best 11.5 AR15 Barrels

Here are some of the best 11.5 AR15 barrels you can buy to configure your rifle. If you are building a short barrel rifle or a pistol with a brace.

The 11.5" barrel adds just a little more muzzle velocity in the context of using M193 55 gr FMJ bullet. And some performance optimization when using a suppressor.

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Ballistic Advantage Gov 11.5" Barrel

The Ballistic Advantage 11.5" Modern Series barrel is a robust and reliable component for AR-15 builders seeking a blend of compact size, accuracy, and durability. Its high-quality materials and construction make it a solid foundation for both SBR and pistol configurations, particularly for those who value long-term performance and compatibility with a variety of ammunition and accessories.

  • Twist: 1:7
  • Gas Port: 0.070"
  • Material: Chrome Moly Vanadium

Daniel Defense CFH Gov 11.5" Barrel

When deciding between a BCM and a Daniel Defense (DD) 11.5" barrel for a truck gun, particularly for both suppressed and unsuppressed use, the consensus leans towards Daniel Defense due to several factors.

The DD 11.5" barrel has a .70 port, which has been reported to handle various ammunition types well without issues, indicating a balanced gas system that functions effectively across a range of conditions.

  • Twist: 1:7
  • Gas Port: 0.070"
  • Material: Chrome Moly Vanadium

Geissele Automatics Chrome Lined 11.5" Barrel

Geissele barrels have sparked a mix of opinions within the AR-15 community, leading to a nuanced perspective on their value and performance. It's a top brand barrel manufacturer, and their 11.5" barrels are top notch, and the gas port is well gassed for smooth cycling for suppressed and unsuppressed.

With prices around the $250 mark on average, Geissele barrels sit in a higher price bracket, which may be a consideration for builders working within tight budgets or looking for the best value proposition.

  • Twist: 1:7
  • Gas Port: 0.07"
  • Material: Chrome Moly Vanadium

Faxon Firearms Duty Gunner 11.5" Barrel

When considering the construction of an 11.5" AR pistol, Faxon Firearms often emerges as a go-to choice for barrels due to their reputation for quality and innovation. Their choice to offer an 11.5" Gunner barrel with a mid-length gas system, as opposed to the more common carbine-length system, presents an intriguing option for builders, particularly those planning to use a suppressor.

Despite concerns about being under-gassed, the barrel's gas port is enlarged to compensate. Coupled with an adjustable gas block, this allows for fine-tuning of the gas system to ensure reliable function, both with and without a suppressor.

  • Twist: 1:7
  • Gas Port: 0.070"
  • Material: Chrome Moly Vanadium

Aero Precision M4E1 11.5" Barrel

the Aero Precision M4E1 11.5" upper is a well-rounded choice for those looking to step up from budget builds without overspending. Its balance of price, performance, and reliability makes it a solid base for both new builds and upgrades. 

The barrel is priced around $330, Aero Precision strikes a balance between affordability and quality, making it an attractive choice for those with a sub $750 budget for an upper.

Its robust construction and reliability under various conditions make it a viable option for SHTF scenarios.

  • Twist: 1:7
  • Gas Port: 0.070"
  • Material: Chrome Moly Vanadium

Bear Creek 11.5" Barrel

The 1:7 twist Bear Creek 11.5" barrel is the cheapest option on this list.  The barrel is made with 4150 chrome moly vanadium and its the best for shooting heavier grain bullets between 75 grain and 69 grain 5.56 rounds.

However, some of users have reported issues with quality control, ranging from minor fit and finish problems to more severe functional defects.

  • Twist: 1:7
  • Gas Port: 0.070"
  • Material: Chrome Moly Vanadium
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