FN AR-15 16″ 5.56 NATO Button-Rifled Barrel – 1:7 Twist | Mil-Spec Precision
Upgrade your AR-15 with legendary FN AR-15 16″ 5.56 NATO Button-Rifled Barrel , featuring button rifling, a 1:7 twist, and mil-spec-grade durability. Engineered for reliability and precision in both tactical and recreational builds.
The FN AR-15 16″ 5.56x45mm barrel is a top-tier component for shooters who demand battle-proven reliability and consistent accuracy. Crafted from certified Chrome Moly Vanadium steel, this barrel is button-rifled for clean lands and grooves, allowing for tighter groups and improved barrel longevity.
Designed for use with 5.56 NATO ammunition, it’s compatible with .223 Remington as well, thanks to its versatile chambering. Whether for defense, range work, or competition, FN delivers unmatched performance.
Key Features of FN AR-15 16″ 5.56 NATO Button-Rifled Barrel – 1:7 Twist | Mil-Spec Precision
Mil-Spec Quality Materials
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Built from Chrome Moly Vanadium (CMV) steel
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Offers long service life and extreme durability
Button-Rifled Bore
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Smooth and accurate rifling
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Enhanced barrel life and shooting consistency
1:7 Twist Rate
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Ideal for stabilizing heavier 62–77 grain bullets
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Perfect for duty or long-range applications
Durable Black Finish
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Corrosion-resistant black oxide or phosphate finish
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Withstands rough use and extreme environments
Technical Specifications for FN AR-15 16″ 5.56 NATO Button-Rifled Barrel – 1:7 Twist | Mil-Spec Precision
| Specification | Details |
|---|---|
| Brand | FN (Fabrique Nationale) |
| Length | 16 inches |
| Caliber | 5.56x45mm NATO |
| Chamber | 5.56 NATO (also accepts .223 Rem) |
| Twist Rate | 1:7 (Right-Hand) |
| Rifling Type | Button-Rifled |
| Material | Chrome Moly Vanadium (CMV) Steel |
| Finish | Black (Phosphate or Oxide) |
| Muzzle Thread | 1/2×28 |
| Gas System | Mid-Length or Carbine (varies by SKU) |
| Application | AR-15 Builds, Tactical, Target Shooting |
Why Choose the FN 16” 5.56 AR Barrel?
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✅ Battle-tested reliability with military-grade materials
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✅ Perfect for tactical or defensive AR builds
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✅ Highly accurate button-rifling for clean shot groups
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✅ Versatile twist rate supports a wide range of bullet weights
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✅ Trusted by professionals and enthusiasts alike
Common Use Cases
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Duty-ready or tactical AR builds
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Accurate range rifles using heavier grain bullets
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️ Reliable all-purpose home defense or truck guns
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Barrel replacements or performance upgrades
Frequently Asked Questions (FAQ)
Q: Can I shoot both .223 and 5.56 through this barrel?
A: Yes. This barrel is chambered for 5.56 NATO, which is compatible with both 5.56 and .223 Rem ammunition.
Q: What kind of gas system does it use?
A: FN offers both carbine and mid-length versions of this 16” barrel—verify your SKU to confirm gas system length.
Q: Is this barrel chrome-lined?
A: FN barrels are often chrome-lined, but exact finish varies..
Ready to Build with FN Precision?
When you choose an FN barrel, you’re choosing decades of military-proven excellence. The FN 16” 5.56 AR-15 barrel delivers unmatched accuracy and ruggedness—perfect for any serious AR build.
Order now and elevate your rifle with FN craftsmanship.
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