NBS Premium Series 14.5" 5.56 NATO Upper Assembly w/ CMT UHPR Mod 2 HDX - 30037
In stock
Elevate your AR-15 build with the NBS Premium Series 14.5″ 5.56 NATO Upper Assembly featuring the CMT UHPR Mod 2 HDX handguard. Designed for tactical enthusiasts and precision shooters, this complete upper delivers exceptional reliability, accuracy, and modularity in a compact package. Whether you’re outfitting a duty rifle or enhancing your personal defense setup, this assembly combines premium components for superior performance without the bulk.
Key Features
- High-Quality Barrel Construction: 14.5-inch 5.56 NATO barrel with Nitride/Melonite finish for enhanced corrosion resistance and smoother operation, reducing wear during extended use.
- Advanced Handguard System: Equipped with the Cross Machine Tool (CMT) UHPR Mod 2 HDX free-float handguard, featuring M-LOK slots on all sides for versatile accessory mounting, anti-rotation tabs for secure fit, and integrated QD sling points for quick attachment.
- Optimized Gas System: Mid-length gas system paired with a Government/SOCOM profile barrel to balance recoil management and reliability, ideal for suppressed or unsuppressed configurations.
- Modular Design: Built on a mil-spec upper receiver compatible with standard AR-15 lowers, allowing seamless integration into your existing platform.
Technical Specifications
- Barrel Length: 14.5 inches
- Caliber: 5.56 NATO
- Barrel Finish: Nitride/Melonite
- Barrel Profile: Government/SOCOM
- Gas System: Mid-length
- Twist Rate: 1:7
- Handguard Length: Optimized for 14.5-inch barrel (approximately 13.7-15 inches)
- Inner Handguard Diameter: 1.315 inches
- Weight: 64 ounces
- Dimensions: 23.5 inches long x 5 inches wide x 5 inches high
- BCG/Charging Handle: Not included – customize with your preferred components
Why Choose This Upper Assembly?
This NBS Premium Series upper addresses common challenges in AR-15 builds, such as balancing maneuverability with effective range. The 14.5-inch barrel provides the velocity needed for 5.56 NATO rounds out to 500 yards while keeping the overall length compact for close-quarters handling. The CMT UHPR Mod 2 HDX handguard offers lightweight strength with 17-4PH stainless steel mounting for rock-solid accessory retention, eliminating wobble and ensuring consistent shot placement. Users appreciate its durability in demanding environments, from range days to tactical training, making it a smart investment for reliability without compromise.
Ready to upgrade? Integrate this premium upper into your AR-15 for unmatched precision and versatility – build the rifle that meets your exact needs today.
Frequently Asked Questions
Q: Is the BCG and charging handle included?
A: No, the BCG and charging handle are not included, allowing you to select components that best suit your build preferences.
Q: What accessories can I mount on the handguard?
A: The CMT UHPR Mod 2 HDX features M-LOK slots on all flat sides, compatible with lights, grips, lasers, and other standard M-LOK accessories for full customization.
Q: Is this upper compatible with my existing AR-15 lower?
A: Yes, it’s built to mil-spec standards, ensuring drop-in compatibility with most standard AR-15 lower receivers.
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Designed for builders who demand reliable performance and real value without unnecessary hype or inflated pricing. NBS stands for "No Bullshit."
Built on Strong Industry Partnerships
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.
Quality You Can Trust
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.
Complete Solutions for Serious Builders
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.
Backed by a Limited Lifetime Warranty
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 | 64 oz |
|---|---|
| Dimensions | 23.5 × 5 × 5 in |
| Barrel Finish | Nitride / Melonite |
| Barrel Profile | Government / SOCOM |
| Cartridge Compatibility | 5.56 NATO |
| Barrel Length | 14.5" |
| Gas System Length | Midlength |
| Twist Rate | 45664 |
| BCG / Charging Handle | Not Included |
| MPN | 30037 |
| UPC | 9999930037 |
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.
