NBS Premium Series 14.5" 5.56 NATO Upper Assembly w/ CMT UHPR Mod 2 HDX
No ratings yetBest price
$549.95at AR15Discounts
checked Oct 31, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| AR15Discounts Best price | $549.95checked Oct 31, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $549.95checked Oct 31, 2026 | Check store | Buy at Dirty Bird |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Dashed line = out of stock. Tracking since Oct 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $549.95 | $549.95 | $549.95 |
| Dirty Bird | $549.95 | $549.95 | $549.95 |
Since Oct 28, 2026.
About this part
The NBS Premium Series 14.5" 5.56 NATO Upper Assembly w/ CMT UHPR Mod 2 HDX is an AR-15 upper part from NBS. It's sold by 2 stores, all at $549.95.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Specifications
- Manufacturer
- NBS
- Platform
- AR-15
From the manufacturer
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 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.
Rating
No ratings yet
Log in to rate this part.
Comments
Please log in to read and leave comments.