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Thread: Running the bolt carrier on rails...

  1. #21
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    Jul 2011
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    what could be easier than the guideles rails already on the BCG?

    Now if you're implying you want to add more room around the BCG where the rails AREN'T, to theoretically add more room for dirt and debris to go, a'la AK-47, that would make some sense, though I don't know if that's an answer in and off itself.

    I'm not trying to be combative or sound like a know it all but I devoted a lot of personal time and money studying the whole AR15/AK47 jam thing - I discovered some interesting; stuff and broke a lot of gear.

    While AK's can be more tolerant of fine foreign objects - i.e. some sand or dirt, a lot of said foreign materials STILL induces jams if it gets into certain spots like the bolt lugs. I woudn't say it happens a lot though - Generally the bolt is forward and that keeps most of the stuff out. Converserly, having all that big room can allow pebbles or small stones inside, and those pieces can work thier way into the fire control group, the auto/safety sear, or into the chamber [if during firing sequence - unlikely] and this will shut the whole thing down pronto.

    The AR on the other hand because it has tighter tolerances, doesn't even allow larger bebris to meke it past the port door. Fine abrasives or foreign material can make it in, but if properly lubricated, surface tension generally mves this stuff out of the way of the moving parts. Generally speaking, making sure there is enough lube is usually the problem - I say usually [in some areas where there is baby powder/talcum powder grade fine sand there are other issues but even then the closed port door negates most of this].

    So adding more space may not absolutely give you what you desire here.

    hope that adds some insight and helps!

  2. #22
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    If you want rollers just buy a HK

  3. #23
    Join Date
    Dec 2007
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    Quote Originally Posted by steelonsteel View Post
    what could be easier than the guideles rails already on the BCG?

    Now if you're implying you want to add more room around the BCG where the rails AREN'T, to theoretically add more room for dirt and debris to go, a'la AK-47, that would make some sense, though I don't know if that's an answer in and off itself.

    I'm not trying to be combative or sound like a know it all but I devoted a lot of personal time and money studying the whole AR15/AK47 jam thing - I discovered some interesting; stuff and broke a lot of gear.

    While AK's can be more tolerant of fine foreign objects - i.e. some sand or dirt, a lot of said foreign materials STILL induces jams if it gets into certain spots like the bolt lugs. I woudn't say it happens a lot though - Generally the bolt is forward and that keeps most of the stuff out. Converserly, having all that big room can allow pebbles or small stones inside, and those pieces can work thier way into the fire control group, the auto/safety sear, or into the chamber [if during firing sequence - unlikely] and this will shut the whole thing down pronto.

    The AR on the other hand because it has tighter tolerances, doesn't even allow larger bebris to meke it past the port door. Fine abrasives or foreign material can make it in, but if properly lubricated, surface tension generally mves this stuff out of the way of the moving parts. Generally speaking, making sure there is enough lube is usually the problem - I say usually [in some areas where there is baby powder/talcum powder grade fine sand there are other issues but even then the closed port door negates most of this].

    So adding more space may not absolutely give you what you desire here.

    hope that adds some insight and helps!
    thanks, that's some good insight.

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