Description
We wanted to build 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 and using a proven M16 profile phosphate BCG paired with a NBS Premium Series 16″ Mid-Length Barrel.
We use Permatex 242 on key components while using mil-spec AEROSHELL 33MS Anti-Seize grease on the barrel nut and muzzle device.
Lifetime Warranty
Upper Receiver
NBS Forged Upper Receiver
– M4 Feedramps
– .250 takedown pin holes
Barrel
NBS Premium Series 16″ .223 Wylde 1:8 Twist Black Nitride Mid-Length Barrel
– Guaranteed to hold a 1.000″ MOA at 100 yards with appropriate ammo and shooting techniques.
Bolt & Carrier Group
• Finish: Salt Black Nitride
• Bolt: 9310 Alloy Steel (High Hardness)
• Carrier: 8620 Aircraft Grade Steel
• Extractor: Shot Peened and Case Hardened D2 Tool Steel
• Firing Pin: Mil-spec 8740 steel with hard chrome finish
• Gas Key: Mil-Spec w/ properly staked Grade-8 screws & Permatex No. 3 sealed
• Cam Pin: 8620 Steel w/ Black Nitride Finish
• Quality Control: MPI Inspected for QC
Charging Handle
NBS Enhanced Charging Handle
Gas System
Mid-Length
– NBS Nitrided Steel Gas Block
– Stainless Steel Mid-Length Gas Tube
Handguard
NBS 15″ M-LOK Handguard
– American Made
Handguard style may vary from batch to batch
Muzzle Device
Mil-Spec A2 Birdcage – Nitride
Vortex SPARC AR Red Dot
- 2 MOA red dot
- Includes AAA battery
- Night vision compatible
- 10 brightness settings
- Lightweight and durable aluminum construction
- Water and fog proof
- Includes picatinny rail mount
- 50,000 hour battery life at minimum setting
- Vortex VIP lifetime warranty
Lower Build Kit
Surplus 5.56/.223 Lower Parts Kit includes:
Bolt Catch, Bolt Catch Plunger, Bolt Catch Roll Pin, Bolt Catch spring Buffer, Retainer, Buffer Retainer spring Disconnect, Disconnect spring Hammer (black or silver in color), Hammer Pin, Hammer spring Magazine Catch, Magazine Catch Button, Magazine Catch spring Pistol Grip (A2 style), Pistol Grip Lock Washer, Pistol Grip Screw, Pivot Pin, Pivot Pin Detent, Pivot Pin Detent spring Selector, Selector Detent, Selector Detent spring Takedown Pin, Takedown Pin Detent, Takedown Pin, Detent spring Trigger (black or silver in color), Trigger Guard, Trigger Guard Roll Pin, Trigger Pin, Trigger Spring
LE-Style Stock
Discount Mil-Spec Carbine Receiver Extension / Buffer Kit
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.
Additional information
| Weight | 140 oz |
|---|---|
| Brand | nbs |
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