I was given a Crosman 160 recently. It was purchased new in the box from the Army back in the 1970s at a surplus sale at Rock Island Arsenal. It is the most acurate air rifle I've ever shot but it will loose all of its C02 overnight. The previous owner had stored this in his attic for about 15 years and I suspect the seals have gone bad.
Is it possible to replace the seals myself, or do I need adult supervision for something like that? If so, any suggestions where to send it?
Thanks!