NBS 7.5" 300 BLK Nitride M-LOK Pistol Kit
Save 17% MSRP: $519.95$433.79
Out of stock
- NBS 7.5″ Slick Side Billet 300 BLK Nitride Pistol M-LOK Upper Assembly
- NBS Slick Side Billet Upper
- 7.5″ 300 BLK Pistol Length Nitride 1:8 Twist Barrel
- NBS Free Float M-LOK Handguard
- Surplus Complete Lower Parts Kit
- NBS Black Nitride BCG
- Mil-Spec Charging Handle
- Padded Pistol Buffer Kit
- American Made
- NBS Limited 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 | 70 oz |
|---|---|
| Dimensions | 19.5 × 5 × 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
- 5.56
- Spec
- drop
- nicks
- level
- safety
- price
- build
US
Excellent kit!!
I have purchased many "complete uppers" from another VERY well known the letter supplier and thought they were exceptional, until I bought this one! Who ever assembled this did it right. Everything came "wet", pre-lubricated. I swapped the muzzle break for a linear compensator to find that the proper grease had been applied. These little details are missing from the "other" supplier. This shows attention to detail, and is worth the couple of bucks for peace of mind knowing it was done right. This supplier made made my "go to" list for sure.
USLove it
I bought the 7.5" 5.56 kit not too long ago, after building and having some time with it, I was highly impressed with it especially for the price it was at. I knew I had to buy this 300 BO to go with it. Everything is well within spec between both kits. I would suggest a kaw valley trigger spring set to go with it, will feel like a drop in trigger! I should have bought 1 more of each before price increase but still definitely worth every dollar I spent!
Pretty solid build
I’m over all pleased with the build. I’ve had a good bit of fun with it. The only bad things I have to say is the selector switch won’t completely go level on safe (but the safety is still engaged) and I’ve taken it apart twice to see if something is in the way but it just seems to be a fault in the selector. And the kak brace tube had some nicks on the threads so it didn’t want to completely tighten down. And the reciever end plate seems to be slightly bent because it won’t lay flush with the end of the reciever.
