Barrel PartsBallistic AdvantageSold by Brownells

Ballistic Advantage

Cold Hammer Forged 5.56x45 Mid-Length Barrels W/Lo Pro For Ar-15 - 5.56 Nato 14.5'''' 1-7 Hanson Mid-Lng 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 Cold Hammer Forged

Machined From

A manganese phosphate finish

Chrome-lined Bore

Includes M4

Feed Ramp Extension

Hp Mpi

Tested

$304.00
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SKU: 430108648

Overview

Built for AR-15 setups chambered in 5.56 NATO, this 11.5-inch barrel is aimed at compact builds where a pinned low-profile gas block and mid-length Hanson profile are part of the plan. It is machined from CrMoV steel with a manganese phosphate finish and a chrome-lined bore, and the limited-run design includes an M4 feed ramp extension plus HP and MPI testing. Ballistic Advantage notes that Hanson barrels are not intended for use with aftermarket piston kits, so this is best suited to builders working within that gas system approach. NFA/ATF rules apply, so it should only be used in compliant configurations.

Why Hunters Choose the Ballistic Advantage

5.56 Nato

Chambering matches common AR-15 platform

Cold Hammer

Forged construction is specified in

Chrome-lined Bore

Manganese phosphate finish are listed

Includes M4

Feed ramp extension for compatibility

Hp Mpi

Testing is stated in the

Key Features

  • 5.56 NATO chambered 11.5-inch Cold Hammer Forged barrel
  • Machined from CrMoV steel with a manganese phosphate finish
  • Chrome-lined bore
  • Includes an M4 Feed Ramp Extension
  • HP and MPI tested
  • Hanson Series barrel with proprietary BA Hanson profile and pinned lo-pro gas block

Best Used For

  • Users building a 5.56 NATO AR-15 with an 11.5-inch barrel and Hanson profile.
  • Shooters needing a barrel with a pinned lo-pro gas block included.
  • Builders who want a chrome-lined, cold hammer forged barrel for a compliant SBR or pistol setup.
  • Owners planning a configuration that does not use aftermarket piston kits.
  • Serious AR-15 users looking for an M4 feed ramp extension and HP/MPI tested barrel.

Specifications

Barrel Length11.5 inch
Blade Finishmanganese phosphate
Borechrome lined
Caliber5.56 NATO
Chamber5.56 NATO
Cold Hammer ForgedYes
Feed Ramp ExtensionM4 Feed Ramp Extension
Gas Blockpinned lo-pro gas block
Gas System LengthMid-Length
MaterialCrMoV steel
ProfileBA Hanson profile
TestingHP and MPI tested

Pros

  • 5.56 NATO chambering matches common AR-15 platform setups.
  • Cold hammer forged construction is specified in the product description.
  • Chrome-lined bore and manganese phosphate finish are listed features.
  • Includes an M4 feed ramp extension for compatibility details.
  • HP and MPI testing is stated in the product information.
  • Pinned low-profile gas block comes included with the Hanson series barrel.

Considerations & Trade-offs

  • This barrel is not designed to work with aftermarket piston kits, so compatibility is limited if your build uses that type of system.
  • NFA/ATF rules apply, and possession with a non-NFA lower receiver is prohibited except when installed on a pistol configuration firearm.
  • The included pinned lo-pro gas block is part of the package, which may reduce flexibility for users who want to choose their own gas block setup.
  • At 11.5 inches, this is a compact barrel intended for specific configurations rather than a general-purpose rifle build.

Suggested Comparisons

  • AR-15 barrels
  • 5.56 NATO barrels
  • Short-barrel rifle components
  • Chrome-lined barrels

Suggested Accessories

  • Gas block
  • Handguard
  • Muzzle device
  • Barrel nut

Frequently Asked Questions

What chambering is this barrel built for?

It is chambered in 5.56 NATO.

What is the barrel length?

The product description lists this barrel as 11.5 inches.

Does this barrel include a gas block?

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

Is this barrel compatible with aftermarket piston kits?

No. The manufacturer states Hanson barrels are not designed to work with aftermarket piston kits.

What testing and finish details are provided?

The barrel is described as HP and MPI tested, with a manganese phosphate finish and a chrome lined bore.