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Thread: questions about Crosman M4-117 Canadian version

  1. #1
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    questions about Crosman M4-117 Canadian version

    Hi all.

    I am new to air guns and just picked myself up a M4-117 by Crosman.

    I live in Canada so I dot the detuned version, 497 FPS IIRC

    Does anyone know exactly how Crosman Detuned this air gun?

    I also came across a metal flat top piston kit upgrade searching the internet the other day, however, wondering if anyone can tell me if a Canadian source exists for this mod?

    can anyone point me in the right direction on these 2 questions?

    thanks all.

  2. #2
    Administrator AirGunEric's Avatar
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    This is the Canadian source: http://scopesandammo.com/storefront/...ston-kit-p-383

    Your M4-177 will be shooting somewhere in the range of 450fps "detuned"- note the figure is a "maximum of 495fps"- Crosman's are detuned generally well below the maximum.
    I'd say I care- but I'd probably be lying...


  3. #3
    Senior Member SeanMP's Avatar
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    Hey those are some nice lookin pistons
    Sean

  4. #4
    Administrator AirGunEric's Avatar
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    Don't you be looking at people's pistons!
    I'd say I care- but I'd probably be lying...


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    Thanks for the input guys.

    I figured I would be shooting at approx 400FPS out of the box.

    Is there a balpark number (in FPS) gain that the M4-177 and Pumpmaster 760 Flat Top Piston Kit will give?

    I want to know if I will go over 500 FPS or not. If I go over 500 FPS, this is now a firearm :(

    If a airgun is modded to be over 500 FPS, and the owner has a PAL. can the owner then regester the airgun as a firearm? or is it illegal to modify the air gun in the first place?

  6. #6
    Member Dukemeister's Avatar
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    At present, there is a long gun registry only in Quebec. If you do not live in Quebec and you have a PAL, modify away ... just remember to treat your over 500 fps long gun as you would any firearm, safe storage, transport etc.
    If you do live in Quebec and modify a non-PAL lung gun to over 500 fps, you have opened a can-o-worms but you may be able to register it, or maybe not because it isn't on "the list".
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    doh, I live in Quebec :(

  8. #8
    Administrator AirGunEric's Avatar
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    It is not illegal to modify a product/manufacture a "firearm" if you have the appropriate license and register for it if/as required.

    The only "illegal" modifications would be if you don't have appropriate licensing, do not register it if required depending on product/where you live, or create some sort of "prohibited device".

    The FTP kit will put an M4 over 500fps- if you do not want a "firearm" then you could avoid this by trimming the hammer spring down a half-dozen coils.

    The real point of the FTP is to allow less pumps for the same amount of power ouput on a product- i.e. if it takes 8 pumps to get 500fps on an M4 or 760, the FTP would allow getting there in 5 or 6 pumps.

    In the case of the M4-177, I would have to assume that if it was brought up to th specs of being a "firearm" it might very well get classified as a "Restricted Firearm" due to its appearance- i.e. simialr to an AR-15 or an M-4, so trimming the hammer spring would be the way to go unless you want to have to license and register it (everywhere in Canada for a Restricted product) and then obtain an Authorization to Transport (ATT) to move it anywhere. You could cut the hammer spring to max it out at 500fps and get there in a reduced number of pumps with the FTP kit.
    I'd say I care- but I'd probably be lying...


  9. #9
    Member Hammer Sandwich's Avatar
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    Quote Originally Posted by AirGunEric View Post
    ....... if it was brought up to th specs of being a "firearm" it might very well get classified as a "Restricted Firearm" due to its appearance- .......
    Oh snap!....that's something I'd never thought of.


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  10. #10
    Moderator poil27's Avatar
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    acording to a guy that work in the firearms lab for the rcmp the m4-177 if shooting more than 500 fps IS restricted in canada.

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