Barrel PartsBallistic AdvantageSold by Brownells

Ballistic Advantage

Cold Hammer Forged 5.56x45 Mid-Length Barrels W/Lo Pro For Ar-15 - 5.56 Nato 16'''' 1-7 Hanson Mid-Length Lopro Chrome-Line Thread

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

5.56 Nato

Chambered 11.5-inch barrel for AR-15

Cold Hammer

Forged construction with chrome-lined bore

Machined From

Manganese phosphate finish

Includes M4

Feed ramp extension and HP/MPI

Hanson Series

Pinned low-profile gas block

$313.50
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SKU: 430108649

Overview

Built for a compact 5.56 NATO setup, this 11.5-inch barrel is aimed at AR-15 builders who want a Hanson Series option with a pinned low-profile gas block included. It uses a cold hammer forged CrMoV steel construction with a manganese phosphate finish and chrome-lined bore, and it also features an M4 feed ramp extension. Ballistic Advantage notes that these barrels are HP and MPI tested and that they are not designed to work with aftermarket piston kits. NFA/ATF rules apply, so this barrel is intended for compliant configurations only.

Why Hunters Choose the Ballistic Advantage

5.56 Nato

Chambering suits common AR-15 platform

11.5-inch Barrel

Length supports compact firearm configurations

Cold Hammer

Forged construction is specified in

Chrome-lined Bore

Manganese phosphate finish are listed

Includes M4

Feed ramp extension for compatibility

Key Features

  • 5.56 NATO chambered 11.5-inch barrel for AR-15 platforms
  • Cold hammer forged construction with chrome-lined bore
  • Machined from CrMoV steel with manganese phosphate finish
  • Includes M4 feed ramp extension and HP/MPI testing
  • Hanson Series profile with pinned low-profile gas block
  • Not designed for aftermarket piston kits

Best Used For

  • Hunters building a 5.56 NATO SBR or pistol configuration within NFA/ATF rules
  • Users wanting a Hanson Series barrel with included pinned lo-pro gas block
  • AR-15 builders seeking a chrome-lined, cold hammer forged 11.5-inch barrel
  • Those avoiding aftermarket piston kits and staying with a standard direct-impingement setup

Specifications

Barrel Length11.5 inch
Barrel TypeCold Hammer Forged
Blade Finishmanganese phosphate
Borechrome lined
Caliber5.56 NATO
Compatibility Notesnot designed to work with aftermarket piston kits
Feed Ramp ExtensionM4 Feed Ramp Extension
Gas Blockpinned lo-pro gas block
MaterialCrMoV steel
ProfileBA Hanson profile
SeriesHanson Series
TestingHP and MPI tested

Pros

  • 5.56 NATO chambering suits common AR-15 platform setups.
  • 11.5-inch barrel length supports compact firearm configurations.
  • Cold hammer forged construction is specified in the product data.
  • Chrome-lined bore and manganese phosphate finish are listed features.
  • Includes M4 feed ramp extension for compatibility support.
  • Pinned low-profile gas block is included with the Hanson series barrel.

Considerations & Trade-offs

  • Hanson barrels are not designed to work with aftermarket piston kits, so compatibility is limited to direct-impingement-style setups.
  • NFA/ATF rules apply, and possession with a non-NFA lower receiver is prohibited except when installed on a pistol configuration firearm.
  • This is an 11.5 inch barrel, which makes it a compact option but not a fit for users seeking a longer barrel length.
  • The pinned lo-pro gas block is included, which reduces flexibility for users who want to choose their own gas block setup.

Suggested Comparisons

  • Other AR-15 barrel lengths
  • AR-15 barrels with different gas system configurations
  • AR-15 barrels without chrome-lined bores
  • AR-15 barrels designed for piston systems

Suggested Accessories

  • AR-15 upper receiver components
  • Gas block
  • Barrel nut wrench
  • Muzzle device

Frequently Asked Questions

What caliber and chambering is this barrel made for?

It is chambered in 5.56 NATO / 5.56x45.

What length is the barrel?

The product data lists this as an 11.5 inch barrel.

What materials and finish are specified?

The barrel is machined from CrMoV steel and has a manganese phosphate finish with a chrome lined bore.

Does this barrel include a gas block?

Yes. The Hanson Series description says it includes a pinned lo-pro gas block.

Can this barrel be used with aftermarket piston kits?

No. The product data states that Hanson barrels are not designed to work with aftermarket piston kits.