NBS AR-15 9310 Bolt Assembly - Nickel Boron

Name: NBS AR-15 9310 Bolt Assembly - Nickel Boron
Brand: NBS

NBS · Bolt Carrier Group

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Best price

$59.95at AR15Discounts

checked Oct 31, 2026

Buy at AR15Discounts

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Where to buy

Store	Price	Availability	Buy	Add to build
AR15Discounts Best price	$59.95checked Oct 31, 2026	Check store	Buy at AR15Discounts
Dirty Bird	$59.95checked Oct 31, 2026	Check store	Buy at Dirty Bird

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Dashed line = out of stock. Tracking since Oct 28, 2026.

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Store	Latest	Lowest	Highest
AR15Discounts	$59.95	$59.95	$59.95
Dirty Bird	$59.95	$59.95	$59.95

Since Oct 28, 2026.

About this part

The NBS AR-15 9310 Bolt Assembly - Nickel Boron is a 300 Blackout bolt carrier group from NBS. It's sold by 2 stores, all at $59.95.

Fits and works with

Caliber: 300 Blackout · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups

Specifications

Manufacturer: NBS
Platform: AR-15
Caliber: 300 Blackout
Finish: Nickel Boron
Material: Steel

From the manufacturer

The complete NBS mil-spec bolt assembly for the .223 Remington/5.56x45mm is a great addition to your AR-15 platform. The quality NBS bolt assembly offers precise fit, function, and reliability for your next build. The bolt includes all of the critical parts (gas ring & extractor) and is ready to be installed in a bolt carrier. AR-15 Bolt Assembly Caliber: .223/5.56/300AAC Bolt Material: 9310 Steel MPI (Magnetic Particle Inspected) Bolt Coating: Nickel Boron MADE IN THE USA BACKED BY THE NBS LIFETIME WARRANTY!