NBS 16" 6.8 SPC II Carbine Quad Rail Upper Assembly
Out of stock
We set out to make one of the most affordable complete uppers, without sacrificing the integrity of the complete upper, and most important the rifle. This upper features a 16″ NBS M4barrel chambered in 6.8 SPC with a 1:10 twist and a carbine gas system. With the NBS line we wanted to make sure that we used quality products that wouldn’t break the bank. This means using a nitrided steel gas block from APOC Armory as opposed to aluminum and using reputable internals like one of our classic NBS 16″ carbine Barrels.
Made in the USA
Lifetime Warranty
| Upper Receiver | NBS – 7075 Aluminum – Pairs beautifully with any mil-spec lower – M4 Feedramps |
| Barrel | NBS 16″ 6.8 SPC II M4 Contour 1:10 Carbine 41V50 Barrel – Parkerized |
| Gas System | Carbine Length – APOC Armory Nitrided Steel Gas Block – Stainless Steel Carbine Length Gas Tube |
| Handguard | 12″ Free Float Quad Rail – Black |
| Muzzle Device | KAK Industry 1/2-36 Slimline Micro Flash Can |
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 | 68.2 oz |
|---|---|
| Dimensions | 28 × 5 × 5 in |
| Barrel Finish | Mag Phosphate |
| Barrel Profile | M4 |
| Cartridge Compatibility | 6.8 SPC |
| Barrel Length | 16" |
| Gas System Length | Carbine |
| Twist Rate | 1-10 |
| BCG / Charging Handle | Not Included |
| UPC | 999994463 |
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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USNBS 6.8 SPC11 .AR15 DISCOUNTS
COMPLETELY SATISFIED! COMPLETE UPPER,STRIKER CHARGE HANDLE, ZEROED WITH 6 ROUNDS 115G. BEST PRICE, QUALITY PARTS, MY DECISION TO GO WITH AR15 . DISCOUNTS. THANKS.
USHighly recommend
Pretty awesome upper for the price specially that it's chambered in 6.8 spc. Shots very accurate and smooth. Highly recommend this item
