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WMD NiB-X AR-15/M16 Bolt Carrier Group - With Hammer

WMD NiB-X AR-15/M16 Bolt Carrier Group - With Hammer

Manufactured by WMD Guns

WMD NiB-X AR-15/M16 Bolt Carrier Group - With Hammer

In Stock

Description and Specifications

Note: Limit 3 per household. Quantities greater than 3 will not allow Checkout.

The WMD Bolt Carrier Group is precisely machined from high-grade steel to M16 specs before receiving WMD'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 includes the hammer.
WMD Guns
Caliber / Gauge
5.56 NATO
Carrier Style
M16 / Full-Auto
Bolt Finish
NiB-X Polished
Bolt Material
Carpenter No. 158
Carrier Finish
NiB-X Polished
Carrier Material
8620 Steel
Gas Key
Magnetic Particle Inspection
High Pressure Tested


Review Summary
(Based on 37 Reviews)

Overall Rating: 5.0 / 5.0


Gotta Have Some Forplay
Jonathan from AR wrote on April 27, 2016:

I recently switched from a colt bolt carrier to this one in my new build. I wanted to give it a good amount of time before I reviewed it. At first I didn't like it in the slightest. After all I've read, in my mind I figured you slapped the thing in and just wiped it off when you were done. It's just like every other bolt out there. You still have to oil it, still have to scrape it, and you still have to use cleaners. But I will say it is easier to clean overall. The first 200-300 rounds were rough. Shooting auto(Slide fire) was damn near impossible. Would jam right on up. Switched to the colt bolt and not a single issue. Back to the WMD and every third was a misfire. But lone behold it just started working great one day. Not a single issue since. Only giving it 4 stars because in reality it's as if you have to pay 150 bucks for it to work like it should. Could just be a noob and just don't know what I'm talking about, but i expect things to work from the get go. But I do like the bolt once it's been worked in.

so far somewhat ok
peter gonzales from N/A wrote on August 10, 2015:

installed it today and went shooting this afternoon. they say no lubricant first 2 rounds did not load correctly. a few times after I had to use the assist to the bold. took it apart and used oil inside and out....seemed to work fine for a while. finally after about 200 rounds it started to loosen up. no further issues as of yet. looks great cleans easily. I will be shooting again within the next few days. if it malfunctions again I will take advantage of the 30 money back guarantee.

Jim from OH wrote on August 10, 2015:

As always top rate service from Primary Arms. Best BCG you can get for the money.

Brandon Huynh from CO wrote on August 10, 2015:

Great product, haven't tested it yet but it seems to be good. It smooth to the touch as if it already has some lubrication on it, but it doesnt.

Sweet looking BCG
George S from CA wrote on August 10, 2015:

The WMD BCG with polished finish looks amazing! It operates very smoothly and provides great contrast to the black anodized upper receiver. Turned out that I didn't need the hammer because I went with a drop in trigger pack. Highly recommend this item for any builder!

wmd nib bcg
wendell stuart from OH wrote on August 10, 2015:

could not be happier,

WMD makes one fine bolt carrier
Ken from CA wrote on August 10, 2015:

Put this BCG into my Spikes Tactical upper and has run flawlessly for 1,000 rounds so far with minimal lube. The NiB coating is not as shiny or "clean looking" as chrome. It has a darker tint to it and "looks a little messy" even when perfectly clean. I already knew this before buying it so could care less about appearance, as long as it functions well. Primary Arms has the best price for a NiB BCG WITH NiB Hammer.

adrian pimentel from CA wrote on August 10, 2015:

I love this BCG!! Works great! Customer service is AWESOME!! I will be purchasing a second BCG soon!! I highly recommend!

sean from NH wrote on August 10, 2015:

Ordered WMD nib-x bolt carrier. Product was in stock. Price was spot on. Communication was great. Shipping was fast. Item as described and packaged well. Will shop PA again.

PA Rocks!
EB from N/A wrote on August 10, 2015:

UPS lost my initial order and Brett promptly shipped out a new one via Fedex. You can't get better customer service!

Just a BCG
Robert White from N/A wrote on August 10, 2015:

I bought a WMD NiB ar-15 BCG with hammer from here because these guys had the lowest price. ordering was easy, and cut to the chase. My package arrived on time and my product was exactly as it was supposed to be: shiny and brand new. I won't hesitate to do further business with PA.

Works great.
Nick O. from TX wrote on August 10, 2015:

Use it in a FA gun and it will run more reliably for longer before I have to clean it. The NiBor finish looks nice too.

Bad ass bolt
frank vazquez from TX wrote on August 10, 2015:

Best bolt in the world !!!!!!

P dub 215 from N/A wrote on August 10, 2015:

Excellent finish, very durable and easy to clean. Cheapest price tag I've seen on the net. Thanks Primary Arms!!! :-)

The best I have ever used.
Robert Hutto from SC wrote on August 10, 2015:

Purchased June 2014. 300-400 rounds fired every session. No failures,just a little darkening of the finish due to mag dumps,half of my ammo is spent this way. Very pleased, see no reason to try the new Relia-Bolt everyone is talking about, I'm sure if the had tried this BCG they would never mention the above. Now I have said this let me knock on wood

Great BCG!
Jason L from TX wrote on August 10, 2015:

The BCG has a very smooth Nickle Boron plated surface. Despite it having high lubricity due to the NiB exterior, a little oiling still assisted with the initial wear-in with my barrel. Bolt Carrier Group cleanup is a snap.

Edward Malnburg from N/A wrote on August 10, 2015:

The quality and attention to detail of this WMD NIB-X Nickle Boron Bolt Carrier Group is of phenomenal quality. Tight fit and smooth operation, I couldnt be happier. The ease of cleaning and the durability of the coating make it well worthy upgrade to my M4. This is exactly what I was looking for in a quality BCG and hammer. I like it so much that I WILL be purchasing additional WMD products for my M4.

Matthew from N/A wrote on August 10, 2015:

Excellent product! Fit and finish are great. Came assembled and ready. Headspace was great. Would definitely buy again.

First nickel boron BCG
Misirugi from TX wrote on August 10, 2015:

These were smooth to the touch. Easy to clean and moves fairly easy without any lube. Much smoother than the regular black phosphate finish

nice BCG
Richard from N/A wrote on August 10, 2015:

Dropped right into my new build nicely. Super fast shipping. Very pleased

WMD NIB-X Nickle Boron Boly Carrier Group/Hammer
Clifford Jr.Mercier from N/A wrote on August 10, 2015:

Flawless machine work. Dropped in right out of the package. 200rounds later,no FTF or FTE. Other than slight discoloration, wipes clean with a rag and continues to rock and roll!!!!

a winner
Steve Wash from VA wrote on August 10, 2015:

Just perfect like last one. So here in bought again.

Great service as usual
Sarah Humphreys from CA wrote on August 10, 2015:

My husband and I have ordered from Primary many times and each time has been great. Great service and great prices. Thanks!

awesome bolt carrier
j gallegos from CA wrote on August 10, 2015:

This bolt carrier group is awesome and super easy to clean. Functioned flawlessly in my yhm ar. Very pleased with function and price. Thanks PA

Nickle Boron is slick
Charles from N/A wrote on August 10, 2015:

It is smoother operating than a standard bolt carrier. You can tell the difference. I got the WMD because it came with a Nickle Boron hammer also. Good price and great service from Primary Arms as always.

N/A from N/A wrote on August 10, 2015:

This is by far the smoothest BCG I have owned so far. Hands down better than your normal mil spec phosphate bcg. A tad pricey sure, but in my mind it was money well spent for my second build.

Worth every dollar!
J Jones from N/A wrote on August 10, 2015:

Dropped right into my DD no problem. Cycled 3 full mags with no complaint. Very easy to clean like I expected. I highly recommend it.

Good Workmanship
Jerry Miller from N/A wrote on August 10, 2015:

Good workmanship, and very slick finish.

Great Service and Product
Lee Roberts from N/A wrote on August 10, 2015:

I needed the BCG for a custom AR upper being built. The product was as advertised.The item was shipped same day the order was placed which was great. I added Primary Arms to my favorites list

Very smooth operation
Jeff Phillips from AL wrote on August 10, 2015:

This WMD NIBx bolt carrier is worth the upgrade. Along with the hammer it almost seemed like the carrier was on bearings. I did wipe it down with LP lube before use but it ran flawlessly in my DPMS. With the added hammer I noticed a little smoother trigger pull. Service and shipping were great!

Garrett Moore from FL wrote on August 10, 2015:

Admittedly, I purchased this BCG because it's the only one I could find in stock, worrying that the Nickle Boron coating was a bit of a gimmick. However, I am beyond pleased with it. The bolt feels perfectly oiled when it is bone dry. I went ahead and oiled it anyway, basically using the coating as insurance. The bolt functioned flawlessly. At the end of the day, I was able to wipe it clean with a paper towel and it looked brand new. I would definitely purchase again. Thanks PA!

WMD M16 Full Auto NiB-X Bolt Carrier Group with Ha
James Rea from N/A wrote on August 10, 2015:

Excellent BCG. The finish is nice and slick and holding up great.

Roman Rodriguez from AZ wrote on August 10, 2015:

The product I ordered has been excellent, but I am extremely pleased with primary arms, the shipping speed and attentiveness to the customer is superior. Thank you.

Great product
Joe from CO wrote on August 10, 2015:

This is a great product. As soon as received it i went to the range put 200 rounds though it with no Ftf or fte. Ran. Very smooth and it was easy to clean. I would recommend it.

Hard to say since I haven't gotten to use it yet
thomas from N/A wrote on August 10, 2015:

the build quality seems great, except the cam pin was way too tight. I sent it back to WMD and they're sending out a replacement. Great customer service, they actually answered the phone both times and talked the problem out with me. I'm sure the replacement will come back perfect as I hear pretty much nothing but good things about this company. If so, I'll raise my rating to 5 stars.

Beautiful. Bring on the excess carbon and zombies!
Tigernation from N/A wrote on August 10, 2015:

Smoother than (the liar) president Obama in 2008.

WMD NIB-X Nickle Boron Bolt Carrier Group/Hammer
Jesse Parrish from MO wrote on August 10, 2015:

The product,WMD NIB-X Nickle Boron Bolt Carrier Group/Hammer, was described accurately, the price was good, prompt shipment, reasonable shipping costs, packaged well, and works flawlessly to date. many rounds through it with no flaws due to product. I will definitely give Primary Arms future business.