Rifle PartsBlackout DefenseSold by Brownells

Blackout Defense

Ar-15 Performance Series Barrels Mid-Length - Ar-15 13.9'''' Barrel Mid-Length Button Rifled 416 Ss

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Blackout Defense

AR-15 Performance Series barrel

Mid-length Barrel

Profile

13.9-inch Barrel

Length

Button-rifled Construction

Premium 416-r

Stainless steel

$215.00
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SKU: 100042683

Overview

Built for AR-15 owners who want a performance-focused barrel for a mid-length setup, this 13.9-inch option is aimed at shooters assembling a rifle for precision-oriented use with quality components. It is described as a button-rifled barrel made from 416-R stainless steel and finished through stress relieving and precision gauging before profiling, threading, and chambering. The product information notes that 1 MOA or better is possible in optimal conditions with match-grade ammunition, though results will depend on the full build and ammunition choice. For hunters and serious shooters, it suits a careful, accuracy-minded rifle setup rather than a general-purpose, do-everything barrel.

Why Hunters Choose the Blackout Defense

Ar-15 Platforms

In a mid-length configuration

Button-rifled Construction

Aimed at performance-focused builds

Made From

Premium 416-R stainless steel bars

Uses 5r

A 1:8 twist rate

Blanks Are

Stress relieved and precision air

Key Features

  • Blackout Defense AR-15 Performance Series barrel
  • Mid-length barrel profile
  • 13.9-inch barrel length
  • Button-rifled construction
  • Premium 416-R stainless steel
  • 5R rifling with 1:8 twist

Best Used For

  • AR-15 builders seeking a performance-focused barrel for precision-oriented setups
  • Hunters pairing match-grade ammunition with a mid-length AR-15 platform
  • Shooters prioritizing a stainless barrel for a refined, accuracy-driven rifle build
  • Users assembling a serious range rifle where consistent performance matters

Specifications

Barrel Length13.9 in
Button RifledYes
ChamberingYes
Country Of OriginBlackout Defense
Gas SystemMid-Length
Gun DrilledYes
Material416-R stainless steel
Precision Air GaugedYes
ProfilingYes
ReamedYes
Rifling5R
Stress RelievedYes
ThreadingYes
Twist Rate1:8

Pros

  • Designed for AR-15 platforms in a mid-length configuration
  • Button-rifled construction aimed at performance-focused builds
  • Made from premium 416-R stainless steel bars
  • Uses 5R rifling with a 1:8 twist rate
  • Blanks are stress relieved and precision air gauged before final work
  • Profiling, threading, and chambering are completed on an ultra-precision 5-axis mill turn machine

Considerations & Trade-offs

  • Performance claims are tied to optimal conditions and match-grade ammunition, so results can vary with load selection and the rest of the rifle setup.
  • The 13.9" mid-length configuration is a specific fit choice, which may limit flexibility if you are building around a different gas system or barrel length.
  • This is a stainless performance barrel, so it is oriented toward a precision-focused build rather than a general-purpose, do-everything setup.
  • The description emphasizes premium machining and chambering steps, but it does not include details on included accessories or compatibility beyond the AR-15 platform naming.

Suggested Comparisons

  • AR-15 barrels
  • Mid-length gas system barrels
  • Stainless steel barrels
  • Match-grade rifle barrels

Suggested Accessories

  • Barrel nut
  • Muzzle device
  • Handguard
  • Gas system components

Frequently Asked Questions

What platform is this barrel made for?

This is an AR-15 Performance Series barrel from Blackout Defense.

What barrel length is listed for this model?

The product title lists this as a 13.9" barrel with a mid-length setup.

What rifling and twist information is provided?

The source data says the barrel uses 5R rifling with a 1:8 twist.

What material is used in the barrel blank?

The description states the Performance Series barrels start with premium 416-R stainless steel bars.

What kind of accuracy information is provided?

The description says it is not unusual for customers to shoot 1 MOA or better in optimal conditions using match-grade ammunition and other quality components. That is a performance note from the manufacturer, not a guaranteed result.