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Thread: Nickel Boron Bolt Carrier Battle: R Guns vs. Spike's

  1. #111
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    LAST WARNING- IF YOU USE THE SEARCH FUNCTION YOU WILL FIND PREVIOUS DISCUSSIONS ABOUT SPIKE'S BCG's AND CERTS. LEAVE THAT SHIT OUT OF THIS THREAD AND STICK TO THE TOPIC.



    Owner/Instructor at Semper Paratus Arms

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  2. #112
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    Quote Originally Posted by C4IGrant View Post
    Typically, companies are going to buy BCG's in the white and then have them done. Others are going to have the phosphate finish removed and the new coating applied.

    There are dimensional tolerances built into a BCG. So they can vary slightly. This is my guess as to why we don't see more problem threads reported on this stuff OR the BCG is just rubbing the barrel extension and upper receiver until it conforms to the spec.


    C4
    So Grant, what you're saying is that the NiB coating and its dimensional fitting is a non-issue? It either fits because of the allowable manufacturing variances in parts, or the problem fixes itself through firing?

  3. #113
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    Quote Originally Posted by C4IGrant View Post
    I could have a store full of any companies AR's I wanted to, but I choose only the best. Which is why there are no RRA/BM/Oly/DPMS/Etc allowed in my shop.
    http://www.gandrtactical.com/cgi-bin...&category=BUSH
    http://www.gandrtactical.com/cgi-bin...&category=RRAR
    Quote Originally Posted by Iraqgunz View Post
    LAST WARNING- IF YOU USE THE SEARCH FUNCTION YOU WILL FIND PREVIOUS DISCUSSIONS ABOUT SPIKE'S BCG's AND CERTS. LEAVE THAT SHIT OUT OF THIS THREAD AND STICK TO THE TOPIC.
    Isn't the quality of the Spike's Tactical BCG the actual topic?

  4. #114
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    For the reading impaired the discussion is about the particular coating and a comparison between R-guns and Spike's. That's it. If you can't understand that then stay out of the thread.

    Quote Originally Posted by Arcana71 View Post



    Owner/Instructor at Semper Paratus Arms

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  5. #115
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    Quote Originally Posted by Iraqgunz View Post
    For the reading impaired the discussion is about the particular coating and a comparison between R-guns and Spike's. That's it. If you can't understand that then stay out of the thread.
    My apologies for having offended you. It simply seemed to me that -- in comparing Spike's BCG to any other -- the discussion of any QC testing or material certification would be germane... especially if it presents some quantifiable difference from the RGuns unit. I hope that wasn't too much of a curveball.

  6. #116
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    Oh Crap, you caught me! Oh wait, no you didn't. If you notice, we have been trying to dump that ONE BM lower we had since 2008 when Obama got elected and dealers bought any stripped lower they could find.

    If you actually looked at the RRA page, you will notice it is all 9mm parts and we haven't stocked that stuff in years.

    Nice attempt though.



    C4

  7. #117
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    Quote Originally Posted by Moltke View Post
    So Grant, what you're saying is that the NiB coating and its dimensional fitting is a non-issue? It either fits because of the allowable manufacturing variances in parts, or the problem fixes itself through firing?
    Not saying that, I am just wondering why we don't see more "binding" issues with coated BCG's.


    C4

  8. #118
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    Because when they coat parts machined to standard dimensions, they put on the coating about 1/2 as thick as what one would normally want if they designed the carrier, bolt, extractor, and pins to be coated. So if it makes the parts out of spec, they are very little out of spec. So it may never show up as a clear issue, but yet would not pass a government inspector who gauged the parts.

  9. #119
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    I thought the NiB coating was only microns thick so any added dimensions was moot. Could be wrong. I haven't seen any unusual wear I can attribute to my NiB BCG. I'll check out the locking lugs when I get home and report back if I find anything.

    I'm not being sarcastic when I say I am leaning from threads like these.
    http://www.youtube.com/wormydog1724

    Quote Originally Posted by Iraqgunz
    This isn't "Ihuntcoyotes.com.

  10. #120
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    It depends if you do a base layer of Electroless Nickel or not. Here is the deal with nickel....

    10-12% phosphorous nickel is very corrosion resistant, but not a very low coefficient of friction and not super hard. In order to get the corrosion resistance, it has to be a certain thickness.

    Nickel-Boron is not very corrosion resistant, but very hard, wear resistant, and a low coefficient of friction.

    If you are just doing Nickel-Boron for marketing purposes, you can do a thin layer of it - and be close enough to in spec that few will notice. It won't win any contests for salt-spray though, so you would not want to submit it to a military competition.

    If you want to do it for serious use, then you do a base layer of the high-phohsperous electroless nickel of a significant thickness, with the Nickel-Boron on top of that to make it hard and slippery. Now it can be up to about 0.0008 thick. Since it goes on both sides of the bore inside the carrier, that will make the hole up to 0.0016 smaller.

    Since the bore inside the carrier is +- 0.001, you are usually already out of spec.

    In summary, to do nickel boron right, one must specially machine the parts (very expensive due to lower quantities just for you), then do both layers. If either of these steps are skipped (and they are skipped all the time), then I am not into it. If done right, it is better than mil-spec. So far, I trust no one except for Colt's experimental ones (not to be confused with people coating Colt parts on their own).

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