I remember one Pawn Shop in Florida had a K11 on the shelf. The young men behind the counter were all goofy enthusiastic about that Swiss service rifle. They had taken out, shot it, and had not cleaned it. Due to the salt air environment, the rifle was more or less a rust bucket. I did not buy it. I bought this one, years later, no rust:
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I found, go to a Pawn Shop, and if you find something you are interested in, push a brush down the barrel, push a patch after that, and have a light so you can see down the tube. You might save yourself from buying a weapon with a pitted chamber and barrel. I don't think I have ever encountered a Pawn Shop that ever cleaned its weapons.