Reviews & Ratings for WMD Guns M16/AR-15 Full Auto Bolt Carrier Group (BCG) - NiB-X Nickel Boron w/ Ceramic TopCoat — 20 reviews — Page 1

I put this in my AR 15 that has a custom Crea coat job on it. It match perfectly it performs perfectly. I’m very happy.

I purchased a firehouse red BCG on 05/23/25 for a patriotic AR-15 build. Because I have limited funds, it took me over a year to get the barrel for the build. Having the complete lower and upper receivers, the BCG and the barrel, I was able to test the WMD BCG in the build. I was astonished to discover that the bolt would not go into battery. I tested a different BCG in my new build and it worked fine. I tested the WMD BCG in other rifles but it did not work. After several iterations of testing the BCG, including removing the WMD bolt and testing it in a different BCG (which worked fine), I decided that the WMD BCG must be out of spec. I emailed WMD's customer service late on a Friday. I live in pacific time. The WMD folks live in eastern time so Monday morning, when I woke up, I had a response from Barbara at WMD. She apologized for my difficulty and offered to ship me a new BCG immediately, though it would be US Marine Corp red. She also offered to have a BCG coated in firehouse red if I wanted to wait. I opted for the immediate USMC red BCG. It shipped that day via 2-day UPS air. She also sent me a shipping label to return my defective BCG. I shipped it on Monday. The replacement BCG arrived Wednesday evening and it works great. BUT, THAT'S NOT ALL. Barbara also included a full AR-15 parts kit in USMC red. The kit included all of the bits that go into the lower and upper receivers, the pins, dust cover, forward assist, trigger guard, bolt catch, safety, buffer retention pi...
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Excellent product exceeded my needs. Very nice finish on Bcg.

Cant go wrong, The color gives it personality and the ceramic coating adds to the performance, Machining looks great and finish is nice, Always happy with WMD products.

My first bcg came without an extractor on the bolt face. I returned it to OP and received another. I love the cobalt gray color over the Nickel Boron.

Great product arrived in perfect condition functions really smooth best bcg Ive bought

My go to bcg for builds. Doing a zombie green ar build...n this bcg topped it off.

As with any color matching from online products, the OD green is less of a dark OD green like most industry AR products and more of a lighter, money green tone. Still looks awesome. Otherwise looks well-machined. Nice, shiny nickel.

Nickle boron w/ ceramic top coat BGC runs smoother and are easier to clean than the phosphate ones. Just 2 drop of oil on the gas rights and you're good to go. I took it apart before anything just to give it a wipe down that was all.

This Nickle boron slide is smooth, if you get some type of color one like I did(FDE), it's supposed to come one where ever it making contact. Shot 200 round 556 and no paint came off yet. I used 2 to 3 drop of lubrication for the piston rings and that was all.