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WMD Guns

WMD Guns 5.56 AR-15 Bolt Carrier Group With Hammer - NIB-X Finish

Wmd Guns 5.56 Ar-15 Bolt Carrier Group With Hammer - NiB-X Finish - Bolt Carrier Group for AR-15 - view 1

WMD Guns

Overview

The WMD Guns 5.56 AR-15 Bolt Carrier Group With Hammer - NIB-X Finish is a bolt carrier group. Compare prices from multiple merchants and find the best deal.

Specifications

MPNWMDNIBXBCG-0002
StyleM16
Caliber5.56 NATO
FinishNickel Boron

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Build history on GunPartPicker

Builders have been adding the WMD Guns 5.56 AR-15 Bolt Carrier Group With Hammer - NIB-X Finish to their builds on GunPartPicker since January 2026. All time, it ranks #274 of the 433 bolt carrier groups builders have added. Builds with this bolt carrier group are mostly chambered in 5.56 NATO (73%, then .223 Wylde 15%), split between mid-length (49%) and carbine-length (23%) gas systems, and mostly AR-15 (93%).

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Frequently Built With

The part most often added in each category by the 90 builds that include this one

Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Charging Handle$69 · out of stockin 16 builds
Wilson Combat AR-15 Billet Upper Receiver

Wilson Combat AR-15 Billet Upper Receiver

Upper Receiverin 6 builds
BLEM PSA AR15 Complete Classic Stealth Lower, Black

BLEM PSA AR15 Complete Classic Stealth Lower, Black

Lower Receiverin 11 builds
ALG Defense Qms AR-15 Trigger Set

ALG Defense Qms AR-15 Trigger Set

Trigger$61in 7 builds
Magpul AFG-2 Angled Fore Grip - Black

Magpul AFG-2 Angled Fore Grip - Black

Foregrip$24in 13 builds
Yankee Hill Machine Co. AR-15 16.5" Threaded Fluted Barrel 1-8 Twist

Yankee Hill Machine Co. AR-15 16.5" Threaded Fluted Barrel 1-8 Twist

Barrelin 4 builds

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

93%
AR-1593%
AR-104.7%
AR-92.3%

Caliber

72.9%
5.56 NATO72.9%
.223 Wylde14.6%
300 Blackout4.2%
.308 Win4.2%
.350 Legend2.1%
Other2.1%

Gas System

48.7%
Mid-Length48.7%
Carbine23.1%
Rifle15.4%
Pistol10.3%
Blowback2.6%

Builds Featuring This Part

See all 19 →

Builds in the community that include the Wmd Guns 5.56 Ar-15 Bolt Carrier Group With Hammer - NiB-X Finish

BuildPartsTotal
For the range mostly 16" build
For the range mostly 16"		12$641.19
new 5.56 build build
new 5.56 build		17$798.40
for the range 9" build
for the range 9"		14$936.34
New 5.56 build build
New 5.56 build		12$1908.77
backup 5.56 build build
backup 5.56 build		11$1656.83
LMT 14.5" build build
LMT 14.5" build		16$3719.70
For home defense 12.5" build
For home defense 12.5"		9$1727.46
As a truck gun 30" build
As a truck gun 30"		19$627.90
Wilson combat 14.5" 5.56 build
Wilson combat 14.5" 5.56		24$1490.23
For hunting hogs 16" build
For hunting hogs 16"		20$1557.85
2-gun 8.5" 5.56 build
2-gun 8.5" 5.56		18$633.41
for nothing in particular 8" build
for nothing in particular 8"		11$595.90

Customer reviews

5.0out of 5

2 global ratings

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Top reviews

C
cbook20_pdw
solid
Reviewed on May 7, 2026Verified with Build

no issues at all

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N
NaimElm
WMD NiB-X BCG stays clean
Reviewed on January 20, 2026Verified with Build

WMD Guns NiB-X BCG cycles cleaner than parkerized BCGs. Carbon scrapes off with a rag rather than a brush. Drop in fitment with proper headspace. Comes with the NiB-X hammer which is a nice bonus. Solid NiB upgrade BCG.

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