If your KGB knife breaks or fails due to faulty workmanship or defective materials, I will replace it free of charge. This does not include normal wear, abuse, lack of maintenance, or unintended use of the knife.
Even "stainless steel" is sometimes prone to corrosion or rust, but non-stainless steels (such as high carbon and tool steels) require attention to cleaning, drying and oiling as needed.
Carbon and tool steels acquire a colored finish or patina with use over time. This can help inhibit rust, but is not a substitute for regular care.
Knives should not be stored in leather sheaths as this can encourage corrosion. If your sheath becomes damp, it should be dried thoroughly as soon as possible before further use..