Airsoft Forums UK

Go on Lees Precision Engineering and buy a rebuild kit if you have to

Problem is i need the pistol for sunday and i only have the one mag.

This is why you keep basic spares on hand for the future! If it's just a slow leak soak the old o-ring in silicone overnight, then try in the morning. If that doesn't work then loop some PTFE around it and it may just hold for Sunday.