C02 rifle repair in Kolkata

[lukeatme]

Hi,

I own a Walther Lever Action C02 rifle, and it seems like a rubber 0-ring or gasket is damaged.
As soon as I load a c02 cartridge into the rifle, screw it in and the cartridge is punctured, all the C02 immediately leaks out of the barrel.

Any recommendations/suggestions of gunsmiths/repair and service shops/ or even do-it-yourself advice would be much appreciated.

Thanks.

[dev]

Can you get your hands on some silicon oil? Pour a drop or so over the O-ring. If the seal hasn't torn it will become flexible and swell into the gap if it has shrunk. Just tighten the C02 after a few seconds of using the oil. Works as good as new.