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Faxon AR15 Barrel 5.56 NATO 16" 1:8 Gunner Profile - Black
$172.00MSRP: $186.00Faxon Firearms Duty Series Gunner 16" 5.56 NATO AR-15 Barrel - Mid-Length Gas, Nitride Finish Discover superior performance and exceptional value with the Faxon Firearms Duty Series Gunner Barrel... -
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Rosco Manufacturing Bloodline 11.5" M4 Profile 5.56 NATO AR-15 Barrel
$153.00Rosco Manufacturing Bloodline 11.5" M4 Profile 5.56 NATO AR-15 Barrel Build a compact, capable AR-15 with the Rosco Manufacturing Bloodline 11.5-inch M4 Profile 5.56 NATO Barrel. Engineered for...
Description
Product Overview
Build or upgrade your rifle with military-grade durability and duty-proven accuracy with the Faxon Firearms 14.5" 5.56 NATO Combat Series AR-15 Barrel. Featuring a true M4 profile and medium taper, this barrel is engineered to deliver ideal weight distribution and heat management during sustained, high-volume firing schedules.
Forged from certified 4150 Chrome Moly Vanadium (CMV) steel, the barrel undergoes rigorous heat-treating and stress-relieving to guarantee structural toughness. It features a hard chrome-lined bore and chamber for maximum erosion resistance, paired with a classic mil-spec phosphate exterior finish for corrosion protection. Every barrel undergoes strict quality control—including Magnetic Particle Inspection (MPI), air-gauge testing, and headspace verification—ensuring relentless reliability out of the box.
NFA / Pin & Weld Compliance Notice: At 14.5 inches in length, this barrel falls below the standard 16-inch minimum required for non-NFA rifles. To avoid Short-Barreled Rifle (SBR) classification under federal law, it must be installed onto a registered SBR upper, an AR pistol lower receiver, or permanently paired with an extended muzzle device via pin-and-weld to reach an overall length of 16+ inches.
Key Features
- True M4 Profile Contour: Military-standard medium taper profile provides optimal balance, rigidity, and rapid heat dissipation.
- Hard Chrome-Lined Bore & Chamber: Dramatically extends barrel service life, resists throat erosion, and simplifies cleaning after high-volume fire.
- 4150 CMV Steel Construction: Certified Mil-Spec material, fully stress-relieved and button-rifled for long-term mechanical reliability.
- Versatile 1:8" Twist Rate: Perfectly stabilizes a wide range of projectile weights, from light 55gr target loads to heavy 77gr match ammunition.
- Classic Phosphate Finish: Heavy manganese phosphate exterior treatment delivers non-reflective, mil-spec corrosion protection.
- Carbine Gas System: Time-tested gas port location ensures positive cycling with standard AR-15 gas blocks and buffer assemblies.
- Rigorous QC Protocol: Individually Magnetic Particle Inspected (MPI), air-gauge tested, and headspace verified for absolute safety.
Specifications
| Brand / Manufacturer | Faxon Firearms |
|---|---|
| Product Line | Combat Series |
| Caliber / Chamber | 5.56 NATO (Compatible with .223 Remington) |
| Barrel Length | 14.5 in. |
| Barrel Profile | True M4 Profile / Medium Taper |
| Twist Rate | 1:8" Button Rifled |
| Material | 4150 Chrome Moly Vanadium (CMV) Steel |
| Bore / Exterior Finish | Hard Chrome-Lined Bore / Phosphate Exterior |
| Gas System Length | Carbine Length |
| Testing & Quality Control | MPI Inspected, Air-Gauge Tested, Headspace Verified |
Frequently Asked Questions
Can I shoot .223 Remington ammunition through this 5.56 NATO barrel?
Yes. Barrels chambered in 5.56 NATO feature dimensions that safely accommodate both standard military-spec 5.56x45mm NATO rounds and commercial .223 Remington ammunition.
What bullet weights work best with a 1:8" twist rate?
A 1:8" twist rate is considered the most versatile twist for .223/5.56. It provides tight stabilization for standard 55gr and 62gr range ammo while having enough twist velocity to stabilize heavy 69gr to 77gr match and defensive loads.
How do I bring a 14.5" barrel to non-NFA 16" legal length?
To reach the federal 16-inch minimum rifle barrel length without paying for an SBR tax stamp, a extended muzzle device (measuring at least 2.1 inches) must be permanently attached to the barrel threads via pinning and welding.
What are the benefits of a hard chrome-lined bore?
Hard chrome lining significantly reduces friction and heat erosion inside the chamber and rifling. It drastically increases barrel life during sustained rapid-fire drills and resists chemical corrosion caused by moisture or harsh propellants.
