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WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group (BCG) - NiB-X Black Nickel Boron Color: Black, Finish: NiB-X, 15% Off w/ Free S&H

WMD Guns NiB-X Coating Bolt Carrier Group BCG Black Finish M4/M16/AR-15 Full Auto
WMD Guns NiB-X Coating Bolt Carrier Group BCG Black Finish M4/M16/AR-15 Full Auto
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WMD Guns NiB-X Coating Bolt Carrier Group BCG Black Finish M4/M16/AR-15 Full Auto

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Questions & Answers
Will this bolt carrier work w .223 rounds also? Expert Answer

The WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group will work with .223 ammo as well as 5.56.

by Hunter, Gear Expert, July 7, 2022
Is this black Cerakote over the Nib-x or is the Nib-x actually black? Can you answer this question?
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
works as it should by SRC670, Verified Owner, December 22, 2024
Nothing fancy, but it was ready to work right out of the box. I expect a long life out of this with proper care.
1/1 found this helpful
Most Recent Reviews
FULL AUTO BCG by Johnny Rotten, Verified Owner, March 10, 2026
Very nice Bolt....Works great with the Rare Breed FRT trigger combined with an H3 Buffer !!
Read All 2 Reviews
Color:
Black
Finish:
NiB-X
Caliber:
5.56x45mm NATO
Gun Make:
AR Platform
Gun Model:
AR-15, M4, M16
Condition:
New

Code: 1UX-BCG-DXCWQ-1-NIBXBCG0001-BLACK

MPN: 1-NIBXBCG0001-Black

UPC: 855899003829

List: $195.00Save 16%
$163.99

  • WMD Guns AR-15/M16/M4 Bolt Carrier Group BCG, 5.56, NiB-X, Black, 1-NIBXBCG0001-Black
  • Walker Defense Research Research Steel Bolt Carrier Group BCG, 5.56mm / .300 BLK, DLC, Flat Dark Earth, FDE-DLC-BCG-556
As low as $369.18
You Save Up to 11%
OP Bucks$7.38

Product Info for WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group (BCG) - NiB-X Black Nickel Boron

Bolt - Case hardened 9310, shot peened, magnetic particle inspected, with high-performance extractor, ejector springs, gas rings and special O-ring buffer. NiB-X Black coated. Firing Pin - Manufactured, heat-treated, hardened, chromed and certified per government drawings. Carrier - AR-15 or M16 style (heavy weight), 8620 material, heat treated and case hardened. Manufacturing tolerances on inside diameters tightly controlled. NiB-X Black coated for durability and ease of cleaning. Gas Key - Hardened to USGI Specifications and attached using grade 8 hardened fasteners. NiB-X Black coated. Staked per military specifications. Cam pin - Manufactured, heat treated, hardened and certified per Government drawings. NiB-X Black coated.image

Specifications for WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group (BCG) - NiB-X Black Nickel Boron:

Manufacturer: WMD Guns
Color: Black
Finish: NiB-X
Fabric/Material: 9310 Steel, 8620 Alloy Steel
Carrier Material: 8620 Steel
Bolt Material: 9310 Steel
Caliber: 5.56x45mm NATO
Gun Make: AR Platform
Gun Model: M16, M4, AR-15
Condition: New

Package Contents:

  • WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group - NiB-X Black Nickel Boron

What firearm models does the manufacturer say WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group (BCG) - NiB-X Black Nickel Boron is compatible with?

The manufacturer suggests that WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group (BCG) - NiB-X Black Nickel Boron is compatible with AR-15, M4, M16

WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group (BCG) - NiB-X Black Nickel Boron Orderable Models

List of Orderable Models

  • WMD Guns AR-15/M16/M4 Bolt Carrier Group BCG, 5.56, NiB-X, Black, 1-NIBXBCG0001-Black , MPN: 1-NIBXBCG0001-Black , UPC: 855899003829 , Code: 1UX-BCG-DXCWQ-1-NIBXBCG0001-BLACK

WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group (BCG) - NiB-X Black Nickel Boron Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, WMD Guns AR-15/M16/M4 Bolt Carrier Group BCG, 5.56, NiB-X, Black, 1-NIBXBCG0001-Black , MPN: 1-NIBXBCG0001-Black-DEMO , Code: 1UX-BCG-DXCWQ-1-NIBXBCG0001-BLACK-DEMO
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Last updated 2026-08-15 UTC.