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Sig M17 Leaking

Discussion in 'Technical' started by CaptDAR, Oct 31, 2019.

  1. CaptDAR

    CaptDAR Posting Addict

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    My Sig M17 started leaking CO2 this afternoon. Not from the capsule seal but right through and out the mag top. Anyone had this problem? Looks like I’ll have to order a new valve.

    FE4ED1C8-4AE7-44F4-A13A-0EF088E9EC8B.jpeg 33232C89-EE94-4B56-A548-8B31FBB84393.jpeg 042DAEC9-B64E-43F5-887D-E665AA347F23.jpeg
     
  2. Wild Bill

    Wild Bill co2 Firearm Enthusiast & FX Wildcat owner.

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    My guess is an o-ring inside has worn. But until people start stripping these down we wont know.

    I had to strip down one of my Crosman SBR mags yesterday. Managed to stop it leaking by stripping and rebuilding with some silicon grease.
     
    CaptDAR likes this.
  3. CaptDAR

    CaptDAR Posting Addict

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    I’m not sure yet but I think it will be a simple pressure valve with washer as you say. When capsule is pierced pressure keeps valve closed until mag is placed up into frame, where the internal valve stem opens the mag valve for flow. That’s the release of CO2 one hears when changing mags.
     
  4. PBaz Barrett

    PBaz Barrett 'I love slinging lead me'..

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    Put a little bit of silicon grease in the hole on mag that the valve inserts into it, before inserting back into pistol. Usually seals it..
     
    CaptDAR likes this.
  5. CaptDAR

    CaptDAR Posting Addict

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    Ok I’ve tried it. Reduced the leak but not eliminated it. Still wastes CO2. Have asked my RFD to see if he can order a new mag valve. (Can get a full mag for £45).
     
  6. CaptDAR

    CaptDAR Posting Addict

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    Update on the Sig M17 spares.

    My RFD just got this reply from Sig which may interest others with the same pistol.

    Sig say bring the mag back and they will get it sorted FOC as they dont have parts available at the moment.

    Wonder how long this will take?
     
  7. PBaz Barrett

    PBaz Barrett 'I love slinging lead me'..

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    Lol im just on with some pinking using my M17 right now. I always dab a touch of silicon grease on top of mag before inserting into pistol, otherwise it sometimes hisses slightly (leaks) but a dab of silicon grease sorts it.. Whoops just noticed, I already said that!.. Ignore me, had a late night :facepalm:.. Interesting though from Sig Sauer..:cool:
     
    Last edited: Nov 22, 2019
  8. CaptDAR

    CaptDAR Posting Addict

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    Tried that made a little difference but leak still persists. The Co2 is venting right through the mag before inserting into the pistol, then it stops.
     
  9. PBaz Barrett

    PBaz Barrett 'I love slinging lead me'..

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    ok, I guess you already use a drop of silicon oil on bulb before inserting.. must be a damaged seal or something..
     
  10. Stevejchurchill

    Stevejchurchill Newbie

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    I have this issue too would love to know a fix
     
  11. CaptDAR

    CaptDAR Posting Addict

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    Buy a new magazine although I got mine FOC from Sig importers via my RFD.
     
  12. PBaz Barrett

    PBaz Barrett 'I love slinging lead me'..

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    It will just be a seal mate, but good look getting one because Sig Sauer do not make spare parts :shrug:
     
  13. Jeremym17

    Jeremym17 Newbie

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    For interested readers on leaking cartridge i have put a utube video together showing the fix ..

    Hope this is of use..
     

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