WMD 5.56 AR-15 Bolt Carrier Group Without Hammer - NiB-X Finish

Manufactured by WMD Guns
SKU: NIBXBCG-0001
MPN: NiBXBCG-0001
Manufactured by WMD Guns
48 Reviews
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Details

Details

The WMD BCG is precisely machined from high-grade steel to M16 specs before receiving WMD Gun's proprietary NiB-X nickel boron coating. This coating results in super-smooth action, extreme corrosion resistance, and a harder-than-chrome surface that prevents carbon fouling from adhering, making this an ideal choice for any one who does high-volume shooting. This set features a polished finish and does not include the hammer. If you are looking for a long lasting AR-15 bolt carrier group, the NiB-X BCG is guaranteed to keep your rifle running reliably for years to come.

Features:
  • Proprietary Nickel Boron coating
  • Extremely durable and easy to clean
  • Slick surface makes for an extremely smooth action
  • Polished finish
  • M16 cut
  • Does not include hammer
  • Carrier Steel: 8620 and heat treated
  • Bolt Steel: Carpenter 158 and heat treated
  • Firing Pin: Hardened and chromed
  • Gas Key: Hardened and staked per military standards

WMD Guns has established a reputation of excellence based on extensive firearms and defense industry experience, plating expertise, and gunsmithing capabilities. They are innovators in nickel boron products for the firearms industry and the sole source of the NiB-X nickel boron coating process.
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Specifications

Bolt FinishNickel Boron
Bolt MaterialCarpenter 158 Steel
BrandWMD Guns
Caliber Gauge5.56 NATO
Carrier FinishNickel Boron
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedUntested
Magnetic Particle InspectMagnetic Particle Inspected
ManufacturerWMD
PlatformAR-15
Weight12 Oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

48 reviews

4.8

I've had mine for over 3 years...

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I've had my WMD NB BCG for about 3 years now and it has worked great. The finish is the best of my 3 NB BCGs,(Spikes Tactical, PSA, WMD). The coating is still not showing any signs of coming off or any signs of wear after about 5 thousand rounds in 3 years. I paid full price back then $189 direct from WMD because PA didn't offer it back then. I've been very pleased with it and recommend it to anyone.

A peice of AR15 Art

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This is a beautiful piece of work, the engraved WMD logo is tasty and looks amazing. It sparkles from every angle, Seems to be a well crafted BCG and has functioned perfectly for me, I am using with a Law folding stock adapter and I can really tell the decrease in friction in my action compared to the non NB BCG I was using. It does clean up much easier as well. To be honest though my favorite thing about this bolt carrier group is the bling effect it has. This NIB X is a stunner and they really polished it up well prior to it leaving the factory,. I plan on buying more of these,

Best BCG ever!

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BCG is flawless! Never thought I’d buy anything but BCM! WMD is now my go to for BCGs! Easy to clean and action is smooth as silk!

Nice, fair quality bolt

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WMD makes top notch stuff.
BUT,
this carrier arrived with so very milling marks on bottom of carrier where the rail surface rides inside upper receiver. Was a little surprised at the milling marks and rough areas around reciever. This is second time since covid changed the marker a year and half ago. Seems like company's are sacrificing quality control, for speed on production with demand so high.
Well, they still have a name to represent, so these company need to slow down. And hold to there high quality ways.
Primary arms is awesome as always. Still fast deliveries, even in trying times.
So what the story here,
The story is, it is a sellers market. Demand is thru the roof, production is down. This means, buyers beware. Quality may not be what it once was. Be sure to inspect products fully before you throw in your firearm. Keep you quality expectations ad a buyer.... Always.
Hope this helps, just do your home work.
D. D.

Great BCG

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I would highly recommend this BCG, after shooting 120 rounds rapidly it never malfunctioned and it was very easy to clean. The fit and finish is excellent, it's properly staked, no machine marks or burs. BUY IT! The reviews speak for itself.

Good Quality BCG

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So far this BCG has performed flawlessly. Great built quality, I haven’t noticed any machine marks, just very smooth & slick BCG. The color has darkened after firing about 300 rounds but it’s still feels buttery smooth.

Great BCG

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Everything about this bolt is great except that it does not clean up like new. It will look a little darker after a few cleanings. Not a big deal to me. I run 2 of these in 2 different mid length 16" rifles and the best part about them is you can run them dry and they're very reliable.

Fantastic BCG!

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This thing is smooth as a baby's butt! Easy to clean, and gorgeous! Would recommend and will be replacing the rest of my phosphates with this bolt. Just the time saver in cleaning alone is worth the pennies.