Mp7 suppresor

Discussion in 'Auto & Semi-Auto Discussion' started by Monarch416, Jul 16, 2013.

  1. Monarch416

    Monarch416 New Member

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    Ok so I met someone at my school and we just started having a casual conversation about guns and what'll be new in the next couple years and when I brought up the mp7 and how the only army's that adopted it are replacing it with different pdws for different reasons and when he asked what reasons I said familiarity more mass produced cartridges and rate of fire he then argued saying that the rate of fire reason was "bs" because H&K made a suppressor that increases the rate of fire but my knowledge on suppressors is that they dissipate the gas as to produce les noise and muzzle flash and he also says its like the best one but I didn't think they could increase the rate of fire of guns because in order for them to do that they would have to be directly linked to the weapons gas system wouldn't it? and he's just saying its attachable and that really wouldn't make any sense I mean It probably would be possible if it was internally suppressed but it would prove him wrong cuz there is no mp7 model that's internally suppressed so I don't know there could be one but I wouldn't know off it and sorry for such a long post but I appreciate any feedback on my question
     
  2. elfmdl

    elfmdl New Member

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    You are correct, suppressors lower the decibel level of the gun shots by redirecting gas and reduce muzzle flash. The action is where the rate of fire comes from.
     

  3. MisterMcCool

    MisterMcCool Well-Known Member Supporter

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    Rate of fire is controlled by the cycling of the action.
     
  4. Monarch416

    Monarch416 New Member

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    I know it's just some guns have a gas operated action even though the mp7 isn't one of them but a suppressor can't increase a weapons fire rate can it?
     
  5. rifleman77

    rifleman77 New Member

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    Your colleague is a mr. Knowitall who is trying to sound smart to impress you. You know the type, always have the random fact that your too lazy to google. Just right him off *** a egotistical jackass from now on. And I could see the the mp7 replaced simply because the ammo is so odd. What is it like a 4.8x???. It's the only gun that shoot the round. That more odd than FNs 5.7.
     
  6. Axxe55

    Axxe55 The Apocalypse Is Coming.....

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    not that i know of, no it can't increase the rate of fire. as stated, the cyclic rate is dependent upon design of the action system.

    as stated, a suppressor quiets down the cartridge the same way a muffler does on a vehicle. for cartridge to be fully suppressed it has to be sub-sonic ammo as well, below around 1100 FPS in muzzle velocity IIRC.

    i saw some tests on some firearms years ago about whether a suppressed firearm lost muzzle velocity. in the tests they showed a very small decrease in muzzle velocity as a general rule vs. an unsuppressed firearm of the same type.
     
  7. Monarch416

    Monarch416 New Member

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    Thanks for the feedback and ya I can see that too cuz it's 4.8X57mm so that's one of the big canadites for its removal because most of the other countries have weapon systems that fire the 7.62 or 5.56 in that position
     
  8. KingTiger

    KingTiger Member

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    Suppressors can raise the rate of fire due to increased back pressure. They also help some firearms function more reliably for the same reason.
    That is one of the reasons some use an Endine hydraulic buffer in their FA M-16's. I use one in my AR-15 to keep the increased back pressure from battering my lower when shooting suppressed.

    Here's my poor man's MP7.

    [​IMG]
     
    Last edited: Jul 17, 2013
  9. 1911love

    1911love New Member

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    Nice MAC King! What brand and model is it?
     
  10. KingTiger

    KingTiger Member

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    Thanks. It started out as a SWD M11/9, the lower & FCG are about the only original parts on it now. It has the Lage slow fire upper & accessories. I use the configuration it's in now, with the .22 conversion, more than anything else. Shooting subsonic 9mm, suppressed, is pretty much fun too!
     
  11. JonM

    JonM Moderator

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    suppressors do not lower velocity a single bit. what a suppressor does is disrupt the flow of hot gasses slowing the expansion of the gass from high pressure to low pressure. its like shaking a soda can and instantly popping the tab vs very slowly easing the tab open. the bullet is long gone by the time that occurs.

    the only thing that slows a bullet is friction with air or other objects. since the bullet is not hitting a properly attached suppressor there is nothing but air to slow it down.

    the only two designs of suppressors that DO reduce velocity over non suppressed are the ones that use wipes where the bullets actually contact material in the suppressor. the second type are guns that use integrally suppressed barrels. integral suppression bleeds of gas through ports in the barrel reducing velocity.

    suppressors that do not use a wipe system and screw onto the threads of a muzzle or attach to a flash suppressor brake or other muzzle device do not lose a single fps of velocity.
     
  12. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

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    Thank you Jon. AND...OP? One word, Punctuation!