The NBS Lightweight Bolt Carrier Group is a great option for your next AR-Stoner build. This BCG is machined to strict standards. At 14.5 ounces, this is 18% lighter than standard bolt carrier groups. The Nitride finish is slick and will function flawlessly. Featuring a staked gas key, the NBS Lightweight Bolt Carrier Group is drop-in ready.
- Made for 7.62X51 / 308 Cal
- 9310 Hardened Steel Bolt, 17-4 Stainless Steel Firing Pin (Heat treated to H900 Condition)
- The group comes fully assembled with properly torqued and staked gas key
- Black Nitride Finish
- 8620 carrier and gas key.
- Made in the USA
- MPI Tested
- Hardened extractor S7 tool steel.
- Backed by the NBS 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 | 14.5 oz |
|---|---|
| Dimensions | 8.7 × 1.5 × 1.5 in |
| Bolt Material | 9310 Steel |
| Cartridge Compatibility | .308/6.5 Creedmoor |
| Finish | Salt Bath Nitride |
| Carrier Profile | Lightweight |
| High Pressure Tested | Untested |
| Magnetic Particle Inspected | Magnetic Partical Inspected |
| Platform | AR-10 / LR-308 |
| Bolt Finish | Salt Bath Nitride |
| MPN | 17896 |
| UPC | 9999917896 |
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