FN America AR15 Barrel 10.5 BB M16 5.56 Carbine - 20-100037
Only 2 left in stock
Upgrade your AR-15 with the precision-engineered FN America AR15 Barrel 10.5″ BB M16 5.56 Carbine, designed for tactical enthusiasts seeking superior maneuverability and reliability in close-quarters scenarios. Crafted by FN America, a leader in military-grade firearms components, this 10.5-inch barrel delivers the compact power of 5.56 NATO rounds without compromising on accuracy or durability. Ideal for building custom short-barreled rifles (SBRs) or pistols, it offers the perfect balance of portability and performance for home defense, competitive shooting, or range training.
Key Features
- Chrome-Lined Bore and Chamber: Provides exceptional resistance to corrosion and heat, ensuring long-term reliability even after thousands of rounds.
- M4-Style Feed Ramps: Enhances consistent feeding and extraction, reducing malfunctions during high-stress operations.
- Button-Broached Rifling with 1:7 Twist: Stabilizes a wide range of bullet weights, from 55-grain to heavier loads, for improved accuracy at short ranges.
- Manganese Phosphate Finish: Matte black coating protects against external corrosion and oxidation, maintaining a professional, low-glare appearance.
- High-Pressure Tested (HPT) and Magnetic Particle Inspected (MPI): Factory-tested for microstress-free performance, guaranteeing consistency and safety.
Technical Specifications
- Barrel Length: 10.5 inches
- Caliber: 5.56x45mm NATO
- Gas System Length: Carbine
- Twist Rate: 1:7 RH
- Barrel Profile: Government/SOCOM with M16 extension
- Gas Block Journal: 0.75 inches
- Muzzle Threads: 1/2×28
- Weight: Approximately 1.45 lbs
- Platform Compatibility: AR-15
Why Choose This Product?
The FN America 10.5-inch AR15 barrel addresses common challenges with short-barrel builds, such as reliability under rapid fire and velocity retention. Its carbine-length gas system minimizes over-gassing for smoother cycling, while the compact design excels in tight spaces—perfect for navigating vehicles or urban environments. Users appreciate its robust construction that withstands the rigors of suppressed shooting, reducing wear on components and extending barrel life. Whether you’re assembling a dedicated CQB rifle or enhancing an existing setup, this barrel elevates your firearm’s performance with proven military heritage.
Ready to experience unmatched precision and toughness? Equip your AR-15 with the FN America 10.5″ BB M16 5.56 Carbine barrel today and take your build to the next level of tactical excellence.
Frequently Asked Questions
1. Is this barrel compatible with standard AR-15 uppers?
Yes, this barrel is designed for AR-15 platforms and features an M16 barrel extension for seamless integration with mil-spec receivers.
2. What makes it suitable for suppressed use?
The carbine gas system and chrome lining help manage increased backpressure from suppressors, promoting reliable function while reducing fouling.
3. Does it require any special tools for installation?
Standard AR-15 armorer tools, like a barrel wrench and torque wrench, are recommended for proper headspacing and secure mounting.
| Weight | 23 oz |
|---|---|
| Dimensions | 10.5 × 2.3 × 2.3 in |
| Finish | Mag Phosphate |
| Barrel Profile | Government / SOCOM |
| Cartridge Compatibility | 5.56 NATO |
| Gas Block Journal | 0.75 |
| Barrel Length | 10.5 |
| Gas System Length | Carbine |
| Platform | AR-15 |
| Twist Rate | 1:7 |
| Muzzle Thread Pattern | 1/2×28 |
| MPN | 20-100037 |
| UPC | 845737008406 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
