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A MK12-Profile Barrel for Your Precision AR-15

The MK12 platform received fame for its use with US Special Operations groups as a semi-automatic precision rifle, and one of the essential elements of the platform is now offered as the Brownells 5.56 NATO MK12 Profile AR-15 barrel.

The Brownells 5.56 NATO MK12 Profile AR-15 barrel are completely machined and finished by craftsmen in the USA and are made using stainless-steel bar stock that's 416-R certified steel and completely stress relieved. The barrels measure 18 inches long.

  • Features 1:7 rate of twist
  • Suppressor ready with 1/2x28 TPI threads
  • Features 11-degree target crown
  • Each barrel undergoes magnetic-particle inspection for quality

The Brownells 5.56 NATO MK12 Profile AR-15 barrel also features a complete nitride treatment, as well as precision machining for perfect suppressor compatibility.


Big Book Catalog, Issue:73, Page:028

BROWNELLS - AR-15 5.56MM NATO MK 12 PROFILE

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Cartridge: 5.56 mm NATO

Length: 18"

Contour: MK12

Finish: Black

Gas System Length: Rifle

Muzzle Threads: 1/2-28, ...

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