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Crossman mark 2 is leaking gas...everywhere

When i put the co2 in my gun it leakes with a hissing sound mostly out of the bottom, and i can't find O rings anywhere. Where can i get some??

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Check out Tim is one of the best airgun tuners around and can fix and/or improve your gun.

Posted on Nov 19, 2008

  • scordani Nov 21, 2008

    correction to solution:

    web address should be


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Same size washer (o ring) is availible at most hardware stores... Replace the washer and it will fix your problem. I got mine at Ace hardware.

Posted on Jul 07, 2009

  • Pickergibson Sep 14, 2010

    Contact Phils Vintage Airgun Repair (330) 477-3298. He's located in Dayton Ohio and he's a great guy to deal with and VERY reasonable. He re-sealed my vintage Benjamin 342 .22 caliber pellet gun for only $35 and I wasn't even able to find a repair kit to fix it myself that cheap lol! I also have a Crossman Mark 2 with the same leaking problem. He said $32.00 to re-seal it! I plan to ship it to him soon. Good luck!


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Check out Tim can sell you the o-rings or customize your gun to another level (see the LD pistol).


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