Centurion Arms Hammer Forged 5.56 Carbine Barrel - 12.5"

Manufactured by Centurion Arms
SKU: HFB-LW-12.5
MPN: HFB-LW-12.5
Manufactured by Centurion Arms
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NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.



The National Firearms Act regulates the configurations of some firearms assembled with barrels under 16” long. Know the NFA laws in your state before purchasing this item.

The Centurion Arms cold hammer forged 5.56 AR-15 barrels are made from high quality 41V50 Chrome Moly Vanadium—steel specifically designed for machine gun barrels—so you know it will last thousands of rounds. In order to get the 1:7 twist rate, the barrel blanks are placed on a mandrel and compressed with power hammers to create extremely consistent and smooth lands and grooves with the benefit of work hardening the steel to improve durability. The bore and chamber are then chrome lined to create a surface that is harder than the steel which aids in longevity, and smoother which aids in extraction and overall reliability.

  • 12.5” barrel chambered in 5.56 NATO
  • 41V50 barrel steel
  • Cold hammer forged
  • Chrome lined chamber and bore
  • Manganese Phosphate coated
  • 1:7 twist rate
  • Carbine length gas system
  • HPT and MPI
  • M4 profile and feed ramps

The external surfaces are Manganese Phosphate coated to help with oil absorption increasing corrosion resistance. Each barrel is high pressure tested at 70,000 psi to ensure safe function with 5.56 NATO ammunition and is magnetic particle inspected for quality assurance.

This 12.5” barrel features a carbine length gas system for ultimate reliability and is perfect for your next pistol or SBR build.
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Barrel CoatingParkerized
Barrel ContourGovernment
Barrel Length12.5
Barrel LiningChrome
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandCenturion Arms
Caliber Gauge5.56 NATO
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthCarbine
Thread Pattern1/2 X 28
Twist Rate1:7

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

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