NBS 10.3" 5.56 NATO 4150 CrMoV Carbine Government 1:7 Nitride Barrel - 28362
Out of stock
Upgrade your AR-15 with the 10.3″ 5.56 NATO 4150 CrMoV Carbine Government 1:7 Nitride Barrel, engineered for tactical precision in compact configurations. Whether you’re building an SBR, pistol, or suppressed rifle, this lightweight barrel delivers reliable cycling, enhanced accuracy, and superior durability without compromising on maneuverability. Crafted from premium 4150 Chrome Moly Vanadium steel and finished with a tough nitride coating, it withstands harsh conditions while optimizing velocity for 5.56 NATO rounds.
Key Features
- Premium Material Construction: Forged from 4150 CrMoV steel for exceptional strength and heat resistance, ensuring longevity in high-round-count scenarios.
- Nitride Finish: Melonite/QPQ treatment provides outstanding corrosion resistance and reduces friction for smoother operation and easier cleaning.
- Government/SOCOM Profile: Balances weight reduction with structural integrity, ideal for close-quarters handling without excess bulk.
- 1:7 Twist Rate: Stabilizes heavier 55-77 grain bullets for improved accuracy and terminal performance at extended ranges.
- Carbine Gas System: Promotes reliable ejection and reduced recoil, perfect for dynamic shooting environments.
Technical Specifications
- Caliber: 5.56 NATO
- Barrel Length: 10.3 inches
- Gas System Length: Carbine
- Twist Rate: 1:7 RH
- Muzzle Thread Pattern: 1/2×28
- Gas Block Journal: 0.750 inches
- Finish: Nitride / Melonite
- Profile: Government / SOCOM
- Platform: AR-15
- Weight: 19.3 oz
Why Choose This Barrel?
Short-barreled AR-15 builds often face challenges like over-gassing and reduced velocity, but this nitride AR-15 barrel solves those issues with its optimized carbine-length gas system and precise chambering. The 1:7 twist ensures consistent bullet stabilization, addressing common accuracy concerns in compact setups. Its lightweight design at just 19.3 ounces minimizes fatigue during extended use, while the corrosion-resistant nitride finish protects against environmental wear—ideal for hunters, competitive shooters, or home defense enthusiasts seeking a dependable 5.56 carbine barrel. Backed by rigorous testing, it offers professional-grade performance at an accessible level, helping you achieve sub-MOA groups with quality ammo.
Transform your AR-15 into a high-performing compact powerhouse. Add this 10.3″ 5.56 NATO barrel to your build today and experience unmatched reliability and precision on the range or in the field.
Frequently Asked Questions
What makes the nitride finish better than chrome lining?
The nitride (Melonite) finish penetrates deeper into the steel, providing superior corrosion resistance, reduced fouling, and a smoother bore for better accuracy and easier maintenance compared to traditional chrome lining.
Is this barrel suitable for suppressed use?
Yes, the 10.3″ length and 1/2×28 muzzle threading make it an excellent choice for suppressors, helping manage gas blowback while maintaining reliable function in SBR or pistol configurations.
Does it fit standard AR-15 uppers?
Absolutely, this barrel is designed for the AR-15 platform with a standard 0.750″ gas block journal, ensuring seamless compatibility with most mil-spec upper receivers and components.
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Through the strong partnerships AR15Discounts has built with trusted suppliers and vendors, we regularly gain access to premium components often manufactured by or for leading industry names. By purchasing these in volume, we bring them to you under the NBS label, ensuring proven quality reaches your build at a fair price, without the added cost of extensive marketing.
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Every NBS product is specified to the exacting standards we apply to our own rifles. Each component features precision CNC machining, American-made key components where it counts, robust materials, dependable steels, and durable finishes engineered for long-term reliability. These items are either sourced from reputable OEMs or carefully assembled in-house using established name-brand elements, maintaining consistent excellence throughout the lineup.
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From stripped and complete uppers to bolt carrier groups, handguards, lower parts kits, and beyond, NBS provides a unified, affordable selection that allows you to complete confident, high-performing builds.
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All NBS products come with our Limited Lifetime Warranty for the original owner, covering defects in materials and workmanship. AR15Discounts stands firmly behind these parts because, as shooters ourselves, we use and trust them, delivering honest value and gear you can rely on.
| Weight | 19.3 oz |
|---|---|
| Dimensions | 12.3 × 3 × 3 in |
| Finish | Nitride / Melonite |
| Barrel Profile | Government / SOCOM |
| Cartridge Compatibility | 5.56 NATO |
| Gas Block Journal | 0.75 |
| Barrel Length | 10.3 |
| Gas System Length | Carbine |
| Platform | AR-15 |
| Twist Rate | 1:7 |
| Muzzle Thread Pattern | 1/2×28 |
| MPN | 28362 |
| UPC | 28362 |
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.
