FAXON COMBAT SERIES M4 PROFILE 16" CARBINE-LENGTH 5.56 NATO AR15 BARREL
Faxon
$215.00
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Faxon
FAXON COMBAT SERIES M4 PROFILE 16" CARBINE-LENGTH 5.56 NATO AR15 BARREL
Faxon Combat Series M4 Profile — 16" Carbine-Length 5.56 NATO (1:7 Twist)
Classic M4 reliability, chrome-lined for longevity — the combat-ready 16" barrel for your AR-15.
The Faxon Combat Series 16" M4 Profile 5.56 NATO barrel brings the proven military standard into the modern era. Designed and manufactured in-house in Cincinnati, Ohio, this barrel features a hard chrome-lined bore and manganese phosphate exterior for the ultimate combination of durability and corrosion resistance. Its 4150 CMV steel construction, carbine-length gas system, and 1:7 twist rate make it an ideal foundation for duty rifles, training carbines, and general-purpose builds.
Key Benefits
- Authentic M4 profile: Balances rigidity and maneuverability for military-style performance.
- Hard chrome-lined bore: Enhances service life, reduces fouling, and withstands sustained fire.
- Phosphate exterior finish: Mil-spec protection from corrosion and wear.
- 4150 CMV steel: Certified Mil-Spec material for strength and consistency.
- Carbine gas system: Ensures reliable cycling across ammunition types and environments.
- Quality assurance: Every barrel is MPI-inspected, air-gauge tested, and headspace verified.
Specifications
Why Choose the Faxon Combat Series
The Faxon Combat Series delivers professional-grade reliability for shooters who demand the best. Built with chrome-lined bores and manganese phosphate exteriors, these barrels meet or exceed Mil-Spec durability standards. Each unit undergoes stress relief, air-gauge testing, MPI inspection, and headspace verification before leaving Faxon’s Cincinnati facility.
Installation & Compatibility
- Standard M4 extension fits all AR-15 upper receivers.
- Compatible with .750" gas blocks on a 1.9" journal.
- 1/2-28 muzzle threads fit most standard muzzle devices and suppressor adapters.
- Optimized for carbine-length gas systems with standard buffer setups.
Frequently Asked Questions
How does the Combat Series differ from the Duty Series?
Combat barrels feature chrome-lined bores and phosphate exteriors for maximum durability; Duty barrels are nitride treated for smoothness and corrosion resistance.
Is the 16" M4 barrel legal for rifle builds?
Yes, the 16" barrel meets the minimum length requirement for non-NFA rifle builds under U.S. federal law.
What ammunition performs best?
The 1:7 twist rate stabilizes 55–77 grain 5.56 NATO or .223 Rem loads, including match-grade and defensive rounds.
Overview: 16" M4 Carbine Combat Barrel
The Faxon Combat Series 16" M4 Profile 5.56 NATO barrel delivers proven Mil-Spec performance for any AR-15 builder. Featuring a chrome-lined bore, phosphate coating, and 4150 CMV steel construction, this barrel is engineered for long-term reliability and precision.
Each barrel is stress relieved, air-gauge tested, MPI inspected, and headspace verified. With its traditional carbine-length gas system and M4 profile, it’s the ideal choice for shooters seeking authenticity, endurance, and trusted accuracy from a U.S.-made manufacturer.
- Caliber:
- 5.56 NATO
- Barrel Profile:
- Medium Taper
- Barrel Material:
- 4150 CMV
- Rifling Twist Rate:
- 1:7
- Muzzle Thread:
- 1/2x28
- Gas Block Diameter:
- .625"
- Gas System Length:
- Mid
- Barrel Length:
- 16"
- Outside Finish:
- Mag Phos
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