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Thread: Interesting custom parts

  1. #1
    Protea FT Team '08

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    Default Interesting custom parts

    For thos of you who read BBS I am sure this is nothing new.

    Found this site.The guy make some pretty trick parts

    http://www.pmcb.co.uk
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  2. #2
    Inactive Member

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    Allan, what is an Air Stripper? Is it something that vents the gas to the side so that the pellet doesn't get distrubed? to me it looks like a normal muzzlebreak.......
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  3. #3
    Sharp Shooter
    The Professor

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    Stopper,

    An 'air stripper' is a modified muzzle brake. The idea (as applied to FT rifles) was developed by Mick Dawes and Nick Jenkinson back in the early 90's and was originally called a 'still air'. It simply involved adding a tube inside a muzzle brake with a gap between it and the muzzle. The pellet jumps the gap and the majority of the air expands around the outside of the tube and is vented from the porting. The idea being reduction of turbulence around the pellet as it leaves the muzzle.

    Ripley adopted the concept on the AR4 and it continues to this day, such item were also made by a guy called Colin Urquhart.

    Funny thing is the idea has been 'rediscovered', given a new name and suddenly everyone thinks it is some new fangled invention - it's a funny old world :-)
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  4. #4
    Marksman
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    I think the airgun airstripper was actually invented by Cesare Morini...not NJ
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  5. #5
    Sharp Shooter
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    Fair enough, let me rephrase it: in respect of the application to FT rifles..............
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  6. #6
    Marksman
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    a silencer works pretty much as an airstripper already...
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  7. #7
    Inactive Member

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    Guido,
    Does that mean that in theory, a silenced rifle should be more accurate than one with the standard barrel extension like the one the S400 comes out with? Given that the theory of an "Air Stripper" or "muzzle Break" or what ever it is called works as it is professed it should.
    If so, why does so few people at the International Competitions, such as the "Worlds," use silencers.
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  8. #8
    Marksman
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    Gerrief no...airstrippers do not always aid accuracy...

    Muzzle flip compensators where the air is vented upwards to compensate barrel lift can also have some effect.

    I have seen instances of accuracy improving when a silencer was fitted...but this could have been due to different barrel harmonics, more weight at the muzzle etc....all pretty inconclusive
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  9. #9
    Inactive Member

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    A silencer allso works for recoil, and some shooter and hunters use a silencer that are recoilsensitive for recoil and not necessary for silenting the shot.
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  10. #10
    Inactive Member

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    Guido,
    One more question. Are air rifle barrels also harmonics prone, so to speak?
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  11. #11
    Marksman
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    probably the thinner ones are...the 16mm OD ones I doubt very much..

    also inconclusive..I have read a lot about it but there is no general consensus.

    My personal feeling is that they do not get influenced by the tiny amount of vibrations upon firing...
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  12. #12
    Inactive Member

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    Guido,
    Thanks for your reply. That is more or less what I also found most people say. I recall having come across something on the net where somebody/manufacturer used very complicated equipment to measure these things and found that in small bore air rifles harmonics is of inconsequential significance.
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