NBS 16″ 6.5 Grendel M4 Carbine M-LOK Upper Assembly - 17547
Out of stock
The NBS 16″ 6.5 Grendel M-LOK Upper Assembly is a great option for those looking to go long range with the AR-15 platform. The 6.5 Grendel has been around for a long time and has been hailed by many as the best long range cartridge for small platform ARs. To start, this upper is built on an 7075-T6 upper receiver which provides a solid foundation for the 16″ QPQ Nitride 6.5 Grendel Barrel. The barrel also features 1:8 twist 5R rifling which is an enhanced rifling technique that essentially smooths the transitions between the lands and grooves of the rifling. The result is reduced bullet deformation which improves the flight and accuracy of the projectile.
As always we’re using solid components, like a QPQ Nitride gas block and a stainless steel gas tube, finished off with a Jet Black A2 style muzzle device. The finish on this A2 is much better than the parkerizing of most other A2s and looks outstanding paired with the QPQ Nitride Barrel. We also assemble each upper according to strict standards. This includes dimpling the barrel, using semi-permanent thread locker on the proper components and 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. That is why we use quality components and assemble each unit to the highest standard of quality. We want your upper to function flawlessly out of the box. In fact, we guarantee it will.
Made in the USA
Lifetime Warranty
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 | 87 oz |
|---|---|
| Dimensions | 28 × 5 × 5 in |
| Barrel Finish | Nitride / Melonite |
| Barrel Profile | M4 |
| Cartridge Compatibility | 6.5 Grendel |
| Barrel Length | 16" |
| Gas System Length | Carbine |
| Twist Rate | 1-8 |
| BCG / Charging Handle | Included |
| MPN | 17547 |
| UPC | 9999917547 |
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.
Customer Reviews
- Reviews
- Questions
- 1100
- No Bull
- schiz
- action
- weight
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United States
6.5 no coyote alive
This upper is great quality, light weight and ready for action. This round really is underrated and supersonic past 1100 yards. Bottom line No Bull schiz NBS rocks !
