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 SOCOM barrel chambered in 5.56 NATO with a 1:7 twist and a midlength 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 quality internals like the NBS Black Nitride BCG paired with one of our classic NBS 16″ Midlength Barrels.
Made in the USA
Lifetime Warranty
| Upper Receiver | Anderson – 7075-T6 aluminum – M4 Feedramps – .250 takedown pin holes |
| Barrel | NBS 16″ 5.56 NATO SOCOM1:7 Twist Midlength Black Nitride – Guaranteed to hold a 1.000″ MOA at 100 yards with appropriate ammo and shooting techniques. |
| Bolt & Carrier Group | NBS Black Nitride M16 Bolt Carrier Group .223/5.56 – Full Auto Capable – 9310 MPI and HPT Tested bBolt – Case Hardened 8620 Carrier – 4130 Gas Key – Grade 8 Hardware With Proper Staking – Gas Key Sealed With Permatex No.3 – 8740 Hard Chrome Firing Pin |
| Charging Handle | Standard Charging Handle |
| Gas System | Midlength – APOC Armory Nitrided Steel Gas Block – Stainless Steel Midlength Gas Tube |
| Handguard | 12″ Free Float Quad Rail – Black |
| Muzzle Device | Mil-Spec A2 Birdcage |
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 | 64 oz |
|---|---|
| Dimensions | 28 × 5 × 5 in |
| Barrel Finish | Nitride / Melonite |
| Barrel Profile | Government / SOCOM |
| Cartridge Compatibility | 5.56 NATO |
| Barrel Length | 16" |
| Gas System Length | Midlength |
| Twist Rate | 1-7 |
| BCG / Charging Handle | Included |
| MPN | 3683 |
| UPC | 999993683 |
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