Barrel Deep Dive

Materials and Finishes

The barrel is one of the most abused components of the AR.  Material selection and surface finish are extremely impactful to durability and performance.  In this article we explore the acceptable (and unacceptable) options for barrel material and finish, and discuss the benefits and drawbacks of each.

Reading Time: 3 minutes

Barrel Length

It may seem silly to have an article dedicated to barrel length.  Legal implications aside, there are some misunderstandings that we want to dispel before we get further into the deep dive.

This is a necessary prerequisite to some later discussions.

Reading Time: 3 minutes

Barrel Profile

Barrel profile has a significant impact on key characteristics and behaviors of the barrel.  In this article, we cover the principles of barrel profile and review the benefits and drawbacks of common profiles available to you.

Reading Time: 7 minutes

Gas System Length

Gas length is another frequently misunderstood barrel specification, beyond the nominal label.  In this article, we break down gas length into practical terms.

This is a necessary prerequisite to some later discussions.

Reading Time: 5 minutes

Feedramps

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Reading Time: 3 minutes

Chamber

Chamber selection and cartridge compatibility is a controversial topic.  In this article, we explore the features and considerations for the barrel chamber.

Reading Time: < 1 minutes

Rifling Profile

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Reading Time: 6 minutes

Rifling Method

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Reading Time: 11 minutes

Twist Rate

Twist rate for rifling is one of the must misrepresented and oversimplified topics in the firearms community.  In this article, we explore the science behind twist rate and the considerations for selecting one.

Reading Time: 11 minutes

Dwell Time

Dwell time is an extremely important consequence of barrel length, gas system length, and cartridge selection.  The combined effect can have significant impact on the functionality of the weapon system.

Reading Time: 8 minutes

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