FN America AR15 Barrel 16" BB M16 5.56 Carbine - 20-100039

Elevate your AR-15 build with the FN America AR15 Barrel 16″ BB M16 5.56 Carbine, a precision-engineered component designed for shooters who demand reliability and performance in every round. Crafted by FN America, a leader in military-grade firearms, this 16-inch barrel delivers exceptional accuracy and durability, making it the ideal upgrade for tactical enthusiasts, competitive shooters, and hunters seeking a seamless blend of power and control in a 5.56 NATO platform.

Key Features

• Button-Rifled Construction: Utilizes advanced button rifling for consistent bore dimensions, ensuring superior accuracy and smoother bullet travel compared to traditional methods.
• Chrome-Lined Bore and Chamber: Provides enhanced corrosion resistance and facilitates effortless cleaning, extending the barrel’s lifespan even under heavy use in adverse conditions.
• 1:7 Twist Rate: Optimally stabilizes a wide range of bullet weights from 55 to 77 grains, offering versatility for various shooting applications without compromising on precision.
• Carbine-Length Gas System: Promotes reliable cycling and reduced recoil, allowing for faster follow-up shots and improved handling in dynamic scenarios.
• M16 Profile with .750″ Gas Block Seat: Features a government contour for balanced weight distribution, minimizing front-end heaviness while maintaining structural integrity.

Technical Specifications

• Caliber: 5.56x45mm NATO / .223 Remington
• Barrel Length: 16 inches
• Twist Rate: 1:7 RH
• Gas System: Carbine-length
• Muzzle Threading: 1/2″ x 28 TPI
• Finish: Matte black manganese phosphate
• Material: Chrome-moly vanadium steel
• Weight: Approximately 1.9 lbs
• Compatibility: Standard AR-15/M4 platforms with M4 feed ramps

Why Choose This Product

For shooters frustrated with inconsistent accuracy or premature wear in entry-level barrels, the FN America AR15 Barrel addresses these pain points head-on. Its robust construction withstands high round counts, while the chrome lining reduces fouling buildup, saving time on maintenance and ensuring your rifle performs when it matters most. Whether you’re building a custom defensive carbine or refining a competition setup, this barrel enhances velocity retention and group tightness, helping you hit targets with confidence at extended ranges. Backed by FN’s reputation for quality—trusted by military and law enforcement—this barrel transforms standard builds into high-performance machines without unnecessary complexity.

Ready to optimize your AR-15 for peak reliability? Integrate the FN America 16″ 5.56 Carbine Barrel into your setup today and experience the difference in precision and endurance that only premium components can provide.

Frequently Asked Questions

Q: What bullet weights does the 1:7 twist rate best support?
A: The 1:7 twist excels with heavier bullets, typically 62-77 grains, but handles lighter 55-grain loads effectively for versatile 5.56 applications.

Q: Is this barrel suitable for suppressor use?
A: Yes, the 1/2″ x 28 threading allows easy attachment of suppressors, and the carbine gas system ensures reliable function with added backpressure.

Q: How does the chrome lining benefit long-term use?
A: Chrome lining resists heat and corrosion, promotes easier cleaning, and maintains accuracy over thousands of rounds, ideal for frequent shooters.