Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

Self-Lubricating Finish For Outstanding Durability & Resistance To Fouling

Each WMD bolt-and-carrier set is precisely machined from high-grade steel alloy to government M16 specs, then given WMD's proprietary NiB-X nickel boron coating that results in a super-smooth, harder-than-chrome surface. NiB-X 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-X coated hammer for the smoothest cycling. Also available as an AR15 Bolt Carrier Group.


AR-15, Issue:10, Page:012
Big Book Catalog, Issue:68, Page:013

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. AR15 carrier available.

WMD GUNS - AR-15 5.56 NICKEL BORON BOLT CARRIER GROUPS

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2 Item(s)
NIBXBCG-003 SEMI AUTO BOLT CARRIER KIT
100-010-556WB
AR15 NiB-X Bolt & Carrier Group
100010556AR15 NiB-X Bolt & Carrier Group

Mfr Part: NIBXBCG0003

$189.99

In Stock

Cartridge: 223 Remington

Finish: Nickel-Boron

NIBXBCG-0004 BOLT CARRIER KIT W/HAMMER
100-010-557WB
AR15 NiB-X Bolt & Carrier Group w/Hammer
100010557AR15 NiB-X Bolt & Carrier Group w/Hammer

Mfr Part: NIBXBCG0004

$199.99

In Stock

Cartridge: 223 Remington

Finish: Nickel-Boron

AR-15 5.56 NICKEL BORON BOLT CARRIER GROUPS