MP Brn AR-15 5.56mm Bolt Carrier Group, Nitride

Name: MP Brn AR-15 5.56mm Bolt Carrier Group, Nitride
Brand: Brownells
Availability: OutOfStock

Brownells · Bolt Carrier Group

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Best price

$89.80at Brownells

Out of stock Sale checked Oct 1, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$89.80Salechecked Oct 1, 2026	Out of stock	Buy at Brownells

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 Sep 28, 2026.

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Store	Latest	Lowest	Highest
Brownells	$89.80	$89.80	$89.80

Since Sep 28, 2026.

About this part

The MP Brn AR-15 5.56mm Bolt Carrier Group, Nitride is a 5.56 / .223 bolt carrier group from Brownells. One store lists it, Brownells at $89.80.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups

Specifications

Manufacturer: Brownells
Platform: AR-15
Caliber: 5.56 mm NATO
Finish: Nitride
Material: Steel

From the manufacturer

Whether you're looking to finish off a new AR-15 build or you need a spare bolt-carrier group to have on-hand as a ready replacement (always a good idea), Brownells has you covered with its AR-15 Bolt Carrier Group. This ready-to-roll BCG is built to provide dependable operation in any AR-15 chambered in 5.56 NATO, .223 Remington or 300 Blackout. Each Brownells AR-15 Bolt-Carrier Group features a bolt machined from 9310 tool steel, which is heat-treated and shot-peened. The carrier itself is machined from 8620 hardened steel. Both of these components, as well as every other part in the bolt-carrier group, are finished in a nitride coating. Every bolt is magnetic-particle inspecte Mfg: Brownells