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

  1. #121
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    Now thats an interesting post. Thanks rsilvers.

    I too am learning from this thread, what I thought was a gimmick turns out that if it could be done right, could actually have serious potential.

  2. #122
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    PVD (IonBond) is very thin and hard and a nice black color. It is not as low a coefficient of friction as Nickel Boron though. Also it is not very corrosion resistant unless you put electroless nickel under it, and then it is not thin anymore.

  3. #123
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    Where does hard chrome stack up?

    If this is too far off topic I'd take the answer in a pm. Or maybe an entirely new thread discussing the different finishes and their differences.
    http://www.youtube.com/wormydog1724

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

  4. #124
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    Quote Originally Posted by Wormydog1724 View Post
    Where does hard chrome stack up?
    Nickel-Boron is MUCH better - about three times lower coefficient of friction. Nickel Boron is even more slippery than Nickel-Teflon (NP3) (and it is harder, which is no surprise).


  5. #125
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    thank you rsilvers for contributing some knowledge to the thread it is greatly appreciated

  6. #126
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    Then in summation, we as consumers, if purchasing a NiB BCG from R Guns or Spike's, are buying
    • a properly coated but dimensionally out-of-spec BCG,
    • an improperly coated but dimensionally correct BCG,
    • or a properly coated, dimensionally correct, better-than-mil-spec BCG.

    Not so hot on those odds myself. I did not know that NiB was less corrosion resistant than chrome (thus requiring a sub-coating to properly resist corrosion). Mr. Silvers' posts are definitely appreciated.


    -B
    Last edited by BAC; 11-21-11 at 17:06.
    RIP, Jeff Dorr: 1964 - July 17, 2009


    "When young men seek to be like you, when lazy men resent you, when powerful men look over their shoulder at you, when cowardly men plot behind your back, when corrupt men wish you were gone and evil men want you dead . . . Only then will you have done your share." - Phil Messina

  7. #127
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    Well, in fairness - a thin NiB coating without the nickel under it is still a better coating than Phosphate - just not as good as it could be if the part were machined undersized with the intention of using a coating of a more desirable thickness.

  8. #128
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    Rsilvers,

    So it seems to me that there COULD be a tolerance stack between the larger-than-spec exterior of the bolt and the smaller-than-spec interior of the Bolt Carrier simply due to the coating. Is this correct?

  9. #129
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    Functionally, are we really seeing any vast differences in the wild in regards to tolerance stacking?
    Dave Merrill
    Terrible Technical Writer. Awful Photographer. Lazy Instructor. Kind of a dick.
    Loves Tacos.

  10. #130
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    I'm curious whether miniaturizing the pieces enough to maintain proper dimensions would reduce their ability to cope with 5.56 pressures, seeing as there's less 'core' material.


    -B
    RIP, Jeff Dorr: 1964 - July 17, 2009


    "When young men seek to be like you, when lazy men resent you, when powerful men look over their shoulder at you, when cowardly men plot behind your back, when corrupt men wish you were gone and evil men want you dead . . . Only then will you have done your share." - Phil Messina

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