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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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
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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
