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Thread: supressor versus sound box

  1. #21
    Boolit Master Drm50's Avatar
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    Just a hollow tube with completely open end will suppress to some extent. Any device that will
    allow the gas to expand before bullet exiting will do it. But it won't defeat a sonic crack of bullets
    traveling in excess of the speed of sound.

  2. #22
    Boolit Master





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    Quote Originally Posted by Boolit_Head View Post
    As nice as that is it is only good till they change their mind. I'd rather stay out of the grey areas.
    Grey in you mind not BATFE's.

    Don't build one if you are afraid of that
    Last edited by Geezer in NH; 11-14-2017 at 03:51 PM.

  3. #23
    Boolit Master
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    https://www.midwayusa.com/product/44...ar-15-melonite

    so great gurus of the internet forum, how does this not violate the suppressor regulations?

  4. #24
    Boolit Master
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    Quote Originally Posted by Minuteshaver View Post
    https://www.midwayusa.com/product/44...ar-15-melonite

    so great gurus of the internet forum, how does this not violate the suppressor regulations?
    It does not make the report of the rifle quieter, and thereby does not do the thing a silencer as defined by ATF does. It also doesn't have baffles inside to trap sound.

  5. #25
    Boolit Master
    dragon813gt's Avatar
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    Quote Originally Posted by Minuteshaver View Post
    https://www.midwayusa.com/product/44...ar-15-melonite

    so great gurus of the internet forum, how does this not violate the suppressor regulations?
    That's a brake, not a silencer. All it does is direct the gas. It doesn't reduce the sound.

  6. #26
    Boolit Master
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    that's all a sound box does, direct the sound. so if the linear brake/compensator is good to go why would a pringles can with a little bit of foam in it be bad?

  7. #27
    Boolit Master
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    Quote Originally Posted by Minuteshaver View Post
    that's all a sound box does, direct the sound. so if the linear brake/compensator is good to go why would a pringles can with a little bit of foam in it be bad?
    The foam will absorb some of the noise, serving as baffling material.

    A sound box with baffles (e.g. the tires) will not merely redirect noise, it also quiets the noise. Baffling disrupts the sound pattern by trapping some of the high-energy expanding gas until it cools. A standing sound box is not considered a silencer (per the NFA) because it's not mobile and doesn't attach to the firearm.

  8. #28
    Boolit Master


    Larry Gibson's Avatar
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    A sound box with baffles (e.g. the tires) works in a different way than does a suppressor. The sound box captures the noise from the muzzle blast and attenuates it. The suppressor on the other hand captures the escaping gas at the muzzle and prevents the noise from the muzzle blast from happening.
    Larry Gibson

    “Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
    ― Nikola Tesla

  9. #29
    Boolit Master vzerone's Avatar
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    Padding and baffles absorb the sound reflections and therefore reducing the overall average Reverb time. Suppressors reduce the gas pressure and let it escape into the atmosphere more slowly at a much lesser pressure. It does nothing for the sonic boom of a super-sonic bullet though.

  10. #30
    Boolit Master
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    and every plan I have seen for a sound box has always called for a lot of padding in them. sometimes two layers of standard house insulation material.

  11. #31
    Boolit Master
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    Quote Originally Posted by Minuteshaver View Post
    and every plan I have seen for a sound box has always called for a lot of padding in them. sometimes two layers of standard house insulation material.
    But not portable, and not attached to the firearm.

  12. #32
    Boolit Master
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    The only relevant opinion in this discussion is the one expressed by the technical branch of the BATF period..........may not be what you want to hear, but it is what it is!
    "Always do sober what you said you'd do drunk. That will teach you to keep your mouth shut." - Ernest Hemingway

  13. #33
    Boolit Master
    nekshot's Avatar
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    I am amazed what ties some fellas up in knots. Heck, I am shooting thru my 3rd box and never once considered it in any way that some body could even think of it as a silencer!!
    Look twice, shoot once.

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