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Thread: Teach me about Direct Impingement

  1. #31
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    Well, only the "first" shot expels pressure on the port door. After that, we leave it open for the duration of that shooting iteration. I have seen residue, especially when shooting blanks, but that's the same as suppressed, the gas trap retains more.

    What's isn't known is what peak pressures do exist in the bcg. It's been suggested it's as low as 1500 psi rifle, 2500 psi carbine. Where the figures are sourced is usually never given.

  2. #32
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    Quote Originally Posted by tirod View Post
    Well, only the "first" shot expels pressure on the port door. After that, we leave it open for the duration of that shooting iteration. I have seen residue, especially when shooting blanks, but that's the same as suppressed, the gas trap retains more.
    Yes Sir, only that first shot would be with the cover closed, and that's if one decided to have it closed to begin with.

    I personally dismiss the hole theory though, about carrier exhaust port gas pressure opening the cover before mechanical action does. I would have to see some real hard evidence proving otherwise. And again, if I'm wrong, I stand corrected.


    Quote Originally Posted by tirod View Post
    What's isn't known is what peak pressures do exist in the bcg. It's been suggested it's as low as 1500 psi rifle, 2500 psi carbine. Where the figures are sourced is usually never given.
    That definitely would be interesting to find out now wouldn't it.
    “A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.” -Lao Tzu


    http://quibphotography.com/

  3. #33
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    Quote Originally Posted by Quib View Post
    I personally dismiss the hole theory though, about carrier exhaust port gas pressure opening the cover.
    I completely agree, what would these guys suggests performs the same function in an op-rod AR?
    عندما تصبح الأسلحة محظورة, قد يملكون حظرون عندهم فقط
    کله چی سلاح منع شوی دی، یوازي غلوونکۍ یی به درلود
    Semper Fi
    "Being able to do the basics, on demand, takes practice. " - Sinister

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