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WE M4 Co2 Mag Fix

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  • WE M4 Co2 Mag Fix

    I have tried new o-rings to no avail, soaked them in grenade weight oil over a day. Measured and cleaned everything and still nothing. I can get them to seal until you start firing then the leak comes back.
    The same problems everyone has! when I do get one to seal correctly the life span of the seals is terrible and there seems to be a tiny leak with them . So when you draw a mag later on in the day...click..nothing. It's worth noting that I work with high pressure systems on a daily basis. I have made some custom valves but stumbled on this method on another forum in a very sketchy post any one can do this at home with minimal tooling.

    Co2 capsules can be dangerous injection injuries are not a joke, make sure the mag is empty before continuing. If you didn't just read that last part and say duhhh in your head go no further.

    This solution requires modifying your valve. If you are not confident in your ability don't try this without at least other mags or a spare valve.

    remove the valve from the mag
    remove the green o-ring and throw it away, whoever designed them was not on point that day.
    remove the step from the bottom of the valve body (that the green o-ring sat over) - I used a file then fine grade wet and dry then scotchbrite to polish the surface.
    Place an o-ring 4mm ID and as thick a cross section as you can find 2mm C/S works imperial o-rings @ ID 3.5mm c/s 2.6mm are eve better (use EPDM rubber it performs down to -50 degrees)
    - I have also found the red o-rings for the top of the valve work if you have spares. always soak new o-rings in silicone oil before assembling preferably overnight.
    Drop your o-ring into the valve well and sit the modified valve body on top
    Reassemble the valve
    Enjoy 60-90 shots depending on FPS and efficiency with a mag that will hold a fully charged capsule overnight easily

    You can get a pack of 50 o-rings fro ebay for £8, so far after the mods my mags will cope with 60 shots through by big ass heavy scar. lasted 2 full days with just a drop of oil pre game day as you should be doing anyway.

    If a few people are interested ill post some pics with a bit of a guide

    Adam

  • #2
    Re: WE M4 Co2 Mag Fix

    https://drive.google.com/file/d/0B5l...ew?usp=sharing
    https://drive.google.com/file/d/0B5l...ew?usp=sharing
    https://drive.google.com/file/d/0B5l...ew?usp=sharing
    https://drive.google.com/file/d/0B5l...ew?usp=sharing

    Pics of what I mean. In addition the red o-rings from the standard seal kits work well, These IMPERIAL EPDM 70 RUBBER O-RINGS 2.62MM CROSS SECTION SIZES BS102 - BS125
    ( 371650422834 ) <- ebay item number hold gas for months at a time with a high resistance to cold

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