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.
Brand: NBS
NBS Lightweight AR-10 / 308 / 6.5 Creedmoor Bolt Carrier Group - Black Nitride - 17896
Save 13 %
MSRP: $149.99
$129.95
Out of stock
Description
- 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
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About the Brand
NBS by AR15Discounts
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.
NBS Limited Lifetime Warranty — For the Original Owner
Covering defects in materials and workmanship
AR15Discounts stands firmly behind these parts
As shooters ourselves, we use and trust them
Delivering honest value and gear you can rely on
Additional information
| Weight | 14.5 oz |
|---|---|
| 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 |
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.
Reviews
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David A. 
US dave p. US Donovan United States
Customer Reviews
2.7
Based on 3 Reviews
- Reviews
- Questions
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DA
US
06/04/2025
Slick
Haven't had the chance to try it at the range yet, but from all appearances it looks great. Nice, slick finish!
DP
USI recommend this product
11/23/2024
bolt not in spec
the carrier is nice and light but the bolt itself is out of spec. after install i had to mortar the rifle stock on the ground multiple times to get the bolt back. swapped in a bolt from another bcg and it was smooth as butter.
11/25/2024
AR15Discounts.com
Hello! I apologize you had some issues with this BCG. This is the first report we've had about this bolt having issues, but we know lemons can happen, so please reach out to us at [email protected] and we can get you taken care of, with our lifetime warranty. Best, Michael Earnest
D
United States06/22/2025
Not good
Just like the other review, out of spec. Put it in an Aero M5 upper with a Faxon barrel … had to take it to a gun smith to get it out of battery.
06/24/2025
AR15Discounts.com
We’re sorry to hear this product didn’t meet expectations. That’s definitely not the experience we aim to deliver, and we’d love the chance to look into what went wrong. Feel free to reach out to us at [email protected] with your order number and any details you can share. We're here to help and want to make it right. Thanks again for your honesty and for giving us the opportunity to improve
