NBS 16" Slick Side Billet 5.56 Midlength 416R M-LOK Rifle Kit
Save 21% MSRP: $549.95$433.84
In stock
The NBS 16″ Slick Side Billet 5.56 416R M-LOK Rifle Kit includes everything you need to turn your stripped lower into a functioning rifle. It has our 5-star rated NBS Slick Side Billet 416R Stainless M-LOK Complete Upper. Our customers have been blown away by the outstanding accuracy these of these uppers. It also includes an L-E Style Stock and Buffer Kit and Odin Works Mil-Spec Lower Parts kit.
Here is a bit about the complete upper included in the kit:
This upper uses a nitrided steel gas block from an American Manufacturer as opposed to aluminum, quality American Made handguards, and using a quality NBS M16 profile Black Nitride BCG paired with a 416R Stainless Steel Midlength barrel chambered in 5.56 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 77gr 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. 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.
Lifetime Warranty
Guaranteed Sub-MOA performance with match grade ammo and proper shooting technique
| Upper Receiver | NBS Slick Side Billet Upper – 6061 Aluminum – Pairs beautifully with any mil-spec lower – M4 Feedramps |
| Barrel | 16″ 5.56 NATO 1:8 Twist Mid-Length 416R Stainless – 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 – 9310 MPI Tested Bolt – 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 | Mil-spec |
| Gas System | Mid-Length – APOC Armory Nitrided Steel Gas Block – Stainless Steel Mid-Length Gas Tube |
| Handguard | NBS M-LOK Free Float Handguard – American Made – 6061 Aluminum |
| Muzzle Device | Mil-Spec A2 Birdcage w/ Jet Black Nitride Finish |
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 | 130 oz |
|---|---|
| Dimensions | 40 × 8 × 5 in |
| Brand | nbs |
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
- PMC X-Tac 55
- angle grip
- group sizes
- procedures
- marksman
- gun range
- each other
- magazines
- something
United States
Great budget 416r Stainless barrel
200+ rounds so far at the local gun range. I didn't follow any break-in procedures and group sizes seem to get tighter after about 3 or 4 magazines using PMC X-Tac 55 grain. I'm no marksman using cheap ammo but once the 3x scope was sighted at 30 yards, the group sizes are smaller than a $.25 coin and most of them are touching each other so I'm sure it'll perform nicely out to 100 yards and beyond.
Terrific upper
This upper is fantastic for a build on a budget. Give you everything you want without worrying about missing something.
USIt was OK
I wish they had a better angle grip but overall good
