NBS 18" .223 Wylde Spiral Fluted 1:8 Fortis Night Rail Upper Assembly
Save 13% MSRP: $598.99$520.95
Out of stock
An affordable upper assembly without cutting corners. This means using a nitrided steel gas block from an American Manufacturer as opposed to aluminum, quality American Made handguards, from Fortis Manufacturing, and pairing these components with a solid Stainless Steel Spiral Fluted Midlength barrel chambered in .223 Wylde with a 1:8 twist rate. The 1:8 twist provides the shooter the freedom to pick from a wider selection of bullet weights. From 55gr target rounds to 69gr match bullets, this barrel will stabilize them all.
This also means taking the time to ensure that the upper will function reliably. We use Permatex 242 on key components while using mil-spec AEROSHELL 33MS Anti-Seize grease on the properly torqued barrel nut and muzzle device.
Bottom line is this: you hear all the time about guys buying a budget upper and it not lasting or having to send it back because of some hardware defect or other issue caused by a careless assembly process. We want your upper to function flawlessly out of the box. In fact, we guarantee it will.
Lifetime Warranty
Guaranteed Sub-MOA performance with match grade ammo and proper shooting technique
| Upper Receiver | NBS – 7075 Aluminum – Pairs beautifully with any mil-spec lower – M4 Feedramps |
| Barrel | NBS 18″ .223 Wylde Stainless Spiral Fluted 1:8 Mid-Length Heavy Barrel |
| Gas System | Midlength – APOC Armory Nitrided Steel Gas Block – Stainless Steel Midlength Gas Tube |
| Handguard | Fortis Manufacturing 16″ Night Rail
|
| Muzzle Device | .223/5.56 1/2-28 TPI Compact Muzzle Brake – SS |
NBS — Our In-House Brand for Builders Who Demand Reliable Performance and Real Value.
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 | 68.5 oz |
|---|---|
| Dimensions | 30 × 5 × 5 in |
| Barrel Finish | Stainless |
| Barrel Profile | Heavy |
| Cartridge Compatibility | .223 Wylde |
| Barrel Length | 18 |
| Gas System Length | Midlength |
| Twist Rate | 1-8 |
| BCG / Charging Handle | Not Included |
| UPC | 999994467 |
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.
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