Nickel Boron M16 NiB-X Bolt Carrier Group

Name: Nickel Boron M16 NiB-X Bolt Carrier Group
Brand: WMD Guns
Availability: InStock

WMD Guns · Bolt Carrier Group

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Best price

$149.50at Kentucky Gun Co

In stock Lowest in 30 dayschecked Nov 10, 2026

Buy at Kentucky Gun Co

Compare 7 stores

Where to buy

Store	Price	Availability	Buy
Kentucky Gun Co Best price	$149.50checked Nov 10, 2026	In stock	Buy at Kentucky Gun Co
GunMag Warehouse	$150.99checked Nov 10, 2026	In stock	Buy at GunMag Warehouse
Ammunition Depot	$172.49checked Nov 10, 2026	In stock	Buy at Ammunition Depot
Brownells	$174.99checked Nov 10, 2026	In stock	Buy at Brownells
Battlehawk Armory	$135.20Salechecked Nov 10, 2026	Check store	Buy at Battlehawk Armory
Palmetto State Armory	$150.99checked Nov 10, 2026	Check store	Buy at Palmetto State Armory
OpticsPlanet	$159.49Salechecked Nov 10, 2026	Out of stock	Buy at OpticsPlanet

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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Lowest in-stock price in the last 30 days: $149.50 at Kentucky Gun Co. Dashed line = out of stock. Tracking since Sep 27, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Ammunition Depot	$172.49	$150.99	$172.49
Battlehawk Armory	$135.20	$135.20	$135.20
Brownells	$174.99	$174.99	$174.99
GunMag Warehouse	$150.99	$150.99	$150.99
Kentucky Gun Co	$149.50	$149.50	$149.50
OpticsPlanet	$159.49	$159.49	$159.49
Palmetto State Armory	$150.99	$150.99	$150.99

Since Sep 27, 2026.

About this part

The Nickel Boron M16 NiB-X Bolt Carrier Group is a 5.56 / .223 bolt carrier group from WMD Guns. It's sold by 7 stores (4 in stock), from $135.20 to $174.99. The lowest in-stock price in the last 30 days was $149.50 at Kentucky Gun Co.

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: WMD Guns
Platform: AR-15
Caliber: 5.56 mm NATO
Finish: Nickel Boron
Material: Steel

From the manufacturer

Each WMD bolt-and-carrier set is precisely machined from high-grade steel alloy to government M16 specs, then given WMD's proprietary NiB-XA(R) nickel boron coating that results in a super-smooth, harder-than-chrome surface. NiB-XA(R) reduces friction to the bare minimum and is impervious to corrosion and abrasion. The slick finish also keeps carbon from adhering, so clean up is much faster and easier than with standard parts. Ideal choice for 3-gun competitor sand other high-volume shooters. Available with a matching NiB-XA(R) coated hammer for the smoothest cycling. Also available as an M16 Bolt Carrier Group. Mfg: Wmd Guns SPECS: Carrier - 8620 carbon steel. Bolt - Carpenter 158 steel alloy. Both have Nickel boron finish, silver. Extractor includes black buffer, black O-ring, and spring. Fits mil-spec AR-15/M16 upper receiver. M16 carrier available.