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Thread: Flash suppressor test

  1. #11
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    If a Blackout has any flash, I would like an opportunity to look into it. There are rifles with different thread lengths and we make various Blackout models - generally designed for an actual M4 but we have other fits also.

    As for how to photograph flash, I use a 1 or 2 second shutter speed to ensure that the entire event is captured. I then sum the raw image brightness.

    I like his testing as he contributes so much more than, say, a gun magazine.
    Last edited by rsilvers; 12-25-11 at 18:24.

  2. #12
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    Quote Originally Posted by An Undocumented Worker View Post

    What is the theory behind flash suppression and how they do their job?
    As I understand it from someone much smarter than I...

    They do their job by making the flammable mixture exiting the muzzle too lean (too little oxygen in comparison to the amount of fuel in the mix) to burn efficiently.

    By the time the mix is dispersed into contact with sufficient oxygen to burn, either the fuel has been consumed by incomplete combustion (usually seen as more 'smoke'), the heat of the mix has been lowered below the ignition point of the flammables still in the mix, or...more likely...a little of both.



    MikeN

  3. #13
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    nice test
    Last edited by ForTehNguyen; 12-25-11 at 18:04.

  4. #14
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    Interesting test indeed. Results seem on par with what I have seen, but to me the vortex and blackout are almost identical.

    I have a 14.5" with blackout and I don't get flash, but mainly sparks exiting the muzzle. The vortex does the exact same on a friends 14.5" when shooting xm193 ammo.

  5. #15
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    Quote Originally Posted by MK18Pilot View Post
    You can call it a woodshed comparison but not a test. No lab + no engineers + no data = FAIL. This thread clearly ad illustrates that the internet not only gives access to information but mis-information and dis-information.
    So we need to spend about $6,000,000 of taxpayer money on a team of engineers who will take two years to study this issue and come to pretty much the same conclusion we see presented here. Can you be specific about the mis-information (sic) and dis-information (sic) to which you refer?

  6. #16
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    Quote Originally Posted by An Undocumented Worker View Post
    What is the theory behind flash suppression and how they do their job?
    I always thought they just cooled the gasses by contact with the relatively cold metal to where they were below the temperature where the gasses glow.

  7. #17
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    This "test" reiterates the fact that the A2 FH does a very decent job at mitigating flash while being very inexpensive at the same time.

  8. #18
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    The A2 does not work well enough and it was drawing return fire. That is why the Army - after comparing the AAC Blackout to the A2 and some other aftermarket flash suppressors - emergency airlifted 12,000 Blackouts directly into combat in Nov 2010.
    Last edited by rsilvers; 12-26-11 at 00:47.

  9. #19
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    Quote Originally Posted by MJN99999 View Post
    .....by making the flammable mixture exiting the muzzle too lean (too little oxygen in comparison to the amount of fuel in the mix) to burn efficiently....
    The terms lean and rich refer to the ratio of fuel to oxygen. Lean means too little fuel to too much oxygen. Rich is the opposite, too much fuel too little oxygen.

    Flash hiders allow small amounts of air to mix with the exiting gasses cooling them and hopefully slowing their combustion to the point where no visible light is emitted.
    Last edited by Ando; 12-26-11 at 02:34.

  10. #20
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    Quote Originally Posted by Ando View Post
    The terms lean and rich refer to the ratio of fuel to oxygen. Lean means too little fuel to too much oxygen. Rich is the opposite, too much fuel too little oxygen.

    Flash hiders allow small amounts of air to mix with the exiting gasses cooling them and hopefully slowing their combustion to the point where no visible light is emitted.

    Meh...you are correct...

    Too much eggnog....or maybe vodka...


    Thanks for the technical correction...




    MikeN

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