NiB-X M16/AR-15 Full Auto Bolt Carrier Group BCG – COLORED All WMD BCG components are manufactured by Defense Industrial Base suppliers to WMD’s exacting specifications to provide the best BCG available. Specifically engineered for NiB-X nickel boron coating to provide long life, high reliability and easy cleaning and maintenance. Coating is guaranteed for life against chipping, spalling or flaking. Over 30K rounds in Government protocol endurance testing did not wear the coating off. The Matte version of our BCG is our same NiB-X coating in a bead blasted look. Specifications for WMD Guns M16/AR-15 Full Auto Bolt Carrier Group (BCG) – NiB-X Nickel Boron w/ Ceramic TopCoat: Manufacturer: WMD Guns Finish: NiB-X Fabric/Material: 8620 Alloy Steel, 9310 Steel Cartridge: 5.56x45mm NATO Gun Make: AR Platform Gun Model: M16, M4, AR-15 Condition: New Bolt Material: 9310 Steel Carrier Material: 8620 Steel Features of WMD Guns M16/AR-15 Full Auto Bolt Carrier Group BCG – NiB-X Nickel Boron w/ Ceramic TopCoat: Bolt – Case hardened 9310, shot peened, magnetic particle inspected, with high-performance extractor, ejector springs, gas rings and special O-ring buffer. Extractor – Manufactured, heat-treated, and hardened per government drawings. NiB-X coated. Firing Pin – Manufactured, heat-treated, hardened, chromed and certified per Government drawings. Carrier – M16 style (heavier) carrier functions in AR15 and M4/16 platforms, 8620 material, heat treated and case hardened. Manufacturing tolerances and surface finishes tightly controlled. NiB-X coated for durability and ease of cleaning. Gas Key – Hardened to USGI specifications and attached using grade 8 hardened fasteners. Permatex No. 3D Aviation Form a gasket Type III Sealing Compound per MIL-S-45180 used on assembly. NiB-X coated. Staked per military specifications. Cam Pin – Manufactured, heat treated, hardened and certified per government drawings. NiB-X Coated. Package Contents: WMD Guns M16/AR-15 Full Auto Bolt Carrier Group – NiB-X Nickel Boron w/ Ceramic TopCoat
Steve –
It runs great so far on my 16" barrel AR, mid-length gas system. Quality components, the Nib-X coating is slick and supposedly can run dry but occasionally I hand coated it with some Hoppe's just for safe measure. Easy to clean and I'll be sticking with WMD and their excellent Nib-X coating from now on.
RIc –
I found that its great the only thing is that the color gets scratch and color will remove and i feel that they need to find a paint that will be able to with stand the heat because if not the pain removing will certainly bother you
Nick –
I only have 100 rounds through mine, but so far so good. It is very easy to clean and feels more slippery than a normal milspec bcg. My only gripe is I was hoping the coyote brown bcg would be different than Aero's FDE to get a "50 Shades of FDE" effect, yet they match almost perfectly. Not either company's fault, obviously, but if you have an FDE Aero upper and want a slightly different color bcg, get the FDE WMD bcg.
Patriot –
I read the features of this and I assumed it was going to have a hard ceramic super slick finish similar to any other hard ceramic product I’ve purchased. The coated almost feels like it’s a paint of some sort, it seems like it’s “flaky” and I can already see areas where it’s chipped from handling or whatever. It doesn’t look horrible, but I wouldn’t consider this more than a cosmetic feature, not an extra enhancement. I ended up returning it as I was sent the wrong color, but overall I was slightly disappointed hence the 4 stars. Nothing physically wrong, but I would recommend the regular NIB one instead.
Luis M Ortiz Garcia –
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.
Luis M Ortiz Garcia –
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.