M16 Bolt Carrier Group 5.56X45mm Nitride MP

Best price

$89.99at Brownells

checked Sep 30, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$89.99checked Sep 30, 2026	Check store	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.

About this part

The M16 Bolt Carrier Group 5.56X45mm Nitride MP is a 5.56 / .223 bolt carrier group from Brownells. One store lists it, Brownells at $89.99.

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

From the manufacturer

Reliability for the Discerning Operator

The Brownells M16 5.56 Complete Bolt Carrier Group is designed to work easily and reliably in any AR-15 or M16 rifle chambered in 5.56x45mm, 300 AAC Blackout or .223 Remington.

The Brownells M16 5.56 Complete Bolt Carrier Group is constructed with a bolt made from 9310 steel, which is finished with a heat treatment and shot peening. The carrier is fabricated from 8620 hardened steel. Each element of the bolt-carrier group is finished in a black-nitride coating.