NBS AR-15 .224 Valkyrie/6.8 SPC II Bolt Carrier Group - Nitride - 8390
Only 2 left in stock
The NBSÂ M16 bolt carrier group is the perfect BCG for your next build. Properly built, no corners cut, 100 percent US made. With our lifetime guarantee, you can’t go wrong.
M16 / AR15 6.8 SPC & .224 Valkyrie
- 8620 M16 style carrier
- H&M Black Nitride finish
- Properly heat treated
- Final grind before plating
- 9310 6.8SPC / .224 Valkyrie bolt
- Heat treated
- Shot peened
- H&M Black Nitride finish
- MPI
- 4140 billet gas key
- H&M Black Nitride Finish
- Properly seated with Grade 8 fasteners
- Properly staked to ensure reliability
- 4140 Cam Pin nitride treated for wear resistance
- Billet Machined Extractor
- Machined from solid 4140 bar stock, heat treated and shot peened
- Phosphate coated for reliable extraction
- Extractor insert included
- O-Ring included
- Firing pin precision machined from 17-4 H-900 Stainless Steel
- 100% USA Made
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 | 12.5 oz |
|---|---|
| Dimensions | 7.7 × 1.4 × 8 in |
| Bolt Material | 9310 Steel |
| Cartridge Compatibility | 6.8 SPC/.224 Valkyrie |
| Finish | Salt Bath Nitride |
| Carrier Profile | M16 |
| High Pressure Tested | Untested |
| Magnetic Particle Inspected | Magnetic Partical Inspected |
| Platform | AR-15 |
| Bolt Finish | Nitride / Melonite |
| MPN | 8390 |
| UPC | 999998390 |
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
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USjust the part I needed
this bcg fit and performed perfectly!
US
Great price
Great price and was in stock. Fast shipping.
