Today I received a new Buck vantage force pro in OD green. I really like the knife, it has a perfect lockup and centering. However, one of the first things I noticed was a line of what at first appeared to be some sort of rust on both sides of the knife where the blade starts to thicken up toward the handle. After more examination I found more of it on the gimping of the blade (but not on the spacer gimping), and a small amount on the cut outs of the blade tang and opening hole. I'm not sure if it is rust or not though, it's more of an orange copper color then a red rust color, also it's only where the machining of the blade is. Could it be from the stone washing or machining processes? S30V is rather difficult to rust in my experience, especially for a brand new knife. I tried wiping it off several time with no success. I also own two other of the regular Buck vantage pro knives (both with satin finishes), and neither one have this discoloration on it. It doesn't bother me too much, but I'm just not sure what it is or if I should return the knife.
