WE Co2 valve fix pistol and rifle.

[Alunduk]

 

For anyone that has been having problems with WE Co2 mags I have found a solution that I've been running for 8 months no problems at all. This will work for pistol and rifle mags as the modification is to the valve.

 

I have had ongoing problems from new with these valves either a slow leak when filled or a large leak after a shot draining the remaining bulb. When buying new seal kits I have found the quality of the replacements varies wildly on the green lip seal, but I would say from the many many I have bought 2/10 are usable

 

I've tried new o-rings and seal kits to no avail, soaked them in grenade weight oil over a day to get them to swell. Measured and cleaned everything and still nothing. I can get them to seal until you start firing then the leak comes back. 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. My biggest issue with this is when you draw a mag later on in the day...click..nothing. I have made some custom valves for my pistol mags (don't try this at home) but stumbled on this method on another forum in a very sketchy post, almost anyone 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. Seriously if there is any doubt in your ability to do this safely DO NOT CONTINUE! When testing wear goggles and keep your hands away from the valve, if something goes wrong those little 25g co2 bulbs contain 60bar or 900psi

 

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. If you balls it up its not my problem.

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 even 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. By that I mean I have tested a mag 2.5 days after the bulb being installed and got 2.5 full mags aprox 70 rounds

Guide if anyone is interested  LINK

Adam

[EDcase]

Don't need an of mine fixing just yet but seems like its worth doing a proper guide with pics if you can.

Presumably this will work with any magazine manufacturer using Co2 12g input valves.

[Alunduk]

it's more the output valve but yes as long as they function the same

 

UPDATE : added guide to top post 

[Guyver1]

Nice one Alunduk

 

I'll be giving this a try over the weekend, have 3 WE CO2 mags for my Glock, replacement seal kit never seems to last any time at all.