FAXON COMBAT SERIES M4 PROFILE 14.5" CARBINE-LENGTH 5.56 NATO AR15 BARREL
Faxon
$210.00
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Faxon
FAXON COMBAT SERIES M4 PROFILE 14.5" CARBINE-LENGTH 5.56 NATO AR15 BARREL
Faxon Combat Series M4 Profile — 14.5" Carbine-Length 5.56 NATO (1:7 Twist)
Classic M4 profile. Chrome-lined durability. Built for serious use and battlefield reliability.
The Faxon Combat Series 14.5" M4 Profile 5.56 NATO barrel brings military-proven geometry and construction to a new generation of shooters. Designed for extreme duty, it features a chrome-lined bore and manganese phosphate finish for maximum longevity and corrosion resistance. The 4150 CMV steel construction and precise 1:7 twist deliver consistent accuracy and long-term performance — ideal for service-style carbines and SBRs.
Key Benefits
- True M4 profile: Military-standard contour for optimal heat management and weight distribution.
- Hard chrome-lined bore: Increases barrel life and resists fouling during high-volume firing.
- Phosphate exterior finish: Classic mil-spec corrosion protection with low reflectivity.
- 4150 CMV steel: Certified Mil-Spec material, heat-treated and stress-relieved for toughness.
- Carbine gas system: Proven reliability with all standard-length AR-15 setups.
- Thorough QC: Each barrel is MPI-inspected, air-gauge tested, and headspace verified.
Specifications
Why Choose the Faxon Combat Series
Faxon’s Combat Series represents the pinnacle of duty-grade engineering. Designed for professional users, these barrels feature chrome-lined bores for extreme round-count endurance and a manganese phosphate exterior for environmental protection. Each barrel is stress relieved, air-gauge tested, MPI inspected, and headspace verified to ensure mission-ready performance.
Installation & Compatibility
- Standard M4 extension fits all AR-15 upper receivers.
- Accepts .750" gas blocks on a 1.9" journal.
- 1/2-28 muzzle threads support flash hiders, brakes, and suppressor adapters.
- Optimized for carbine-length gas systems and standard AR-15 bolts.
Frequently Asked Questions
How does the Combat Series differ from the Duty Series?
Combat barrels feature chrome-lined bores and phosphate exteriors for military-grade durability, while Duty barrels use nitride treatment.
Can this barrel be pinned and welded?
Yes — the 14.5" barrel can be pinned with an extended muzzle device to reach 16" overall length.
What ammunition performs best?
The 1:7 twist stabilizes 55–77 grain 5.56 NATO and .223 Rem loads, ideal for both defensive and match-grade ammo.
Overview: 14.5" M4 Carbine Combat Barrel
The Faxon Combat Series 14.5" M4 Profile 5.56 NATO barrel is a direct evolution of the standard military carbine barrel — enhanced with modern manufacturing and materials. Built from 4150 CMV steel, chrome-lined for longevity, and phosphate-coated for corrosion resistance, it’s made for duty and high-volume training.
Each barrel is stress relieved, air-gauge tested, MPI-inspected, and headspace verified to ensure precision and reliability. The 14.5" Combat M4 barrel provides the proven carbine balance and feel trusted by professionals worldwide — now perfected by Faxon Firearms.
- Caliber:
- 5.56 NATO
- Barrel Profile:
- Medium Taper
- Barrel Material:
- 4150 CMV
- Rifling Twist Rate:
- 1:7
- Muzzle Thread:
- 1/2x28
- Gas Block Diameter:
- .750"
- Gas System Length:
- Carbine
- Barrel Length:
- 14.5"
- Outside Finish:
- Mag Phos
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